Apartment Management Won't Honor A Lease For Amount I Signed

Hi, I am in Atlanta.

So last June I signed an early bird special to renew my least for a less amount if I respond by a specific time frame. I did sign by the due date and was expecting to pay the rent for that amount. When the next month came I saw I was being charged a month to month few with base rent at a higher amount than I signed for. I went to the portal to confirm the leased I signed for and it was not in the document file in the portal.. I went to management to ask what happened and saw that we now have a new property management. But same receptionist. I asked about the lease and they advised that they do not have a signed leasing agreement in the system. I spoke in person with the new manager and communicated by sending emails back in forth to the leasing management, and her advising she would help me. But we did determine that the lease was dropped from the portal because ALL tenants did not sign.. They had my children listed as adult tenants and I did not sign because I've never had to do so because they are minors( I've been here for 5 years and never had to sign).. They advised that I would have to provide document to prove their age, I submitted this and requested to have my rent amount adjusted to what I initially signed for.. They advised that they do not have records of that signed lease. and even questioned me signing it in the first place..I'll be honest I even started questioning myself if maybe I did something wrong and didn't submit the correct way after I signed.. and even became more disappointed in myself for not downloading the signed copy like I normally would, but for some reason I didn't this time...I had not have a solid lease during this time frame and was presented with a new lease for a higher rate because they said it was the current market rate. They did refund the month to month fee, because they made the error with listing my children as adult tenants but did not have a final decision on the rent for the lesser amount . I signed and I left it alone for a while (once again we have a new team come in, we had about 8 teams since I've been living her ) until another new management team contacted me to advise I needed to confirm my date of birth because they had a glitch in the system and need to confirm my identity. I give them this information and became upset because this is one of the few times they had system issues and messed up my account. So in my frustration I brought up the lost signed lease, and me being screwed out of the lower amount of rent. and showed her a email trail of me trying to get this worked out, as well as the back and forth with the team that advised no records of the signed lease in the system. The manager agreed that it was strange that if I signed that it would just disappear from records, she didn't call my bluff and decided to investigate with me present in the office.... SHE FOUND THE LEASE I SIGNED WITH THE LOWER AMOUNT AND EMAILED ME A COPY OF IT. She apologized and agreed that this was a messed up situation due to negligence. She sent a request to the Regional manager to make adjustments to my current rent amount and to refund me the difference.. Last week I got a email advising that the request was denied. This is what she said in the email the reason for denial was.. I will remove my name and the rent amount.. but everything else is copied and pasted from the email..

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"After speaking with my Regional Manager, we cannot go back and adjust the rate that was presented to you from June 2023.
We do see that the lease was signed on your end and your children were accidentally listed as residents for that July 2023 renewal lease. I do not know what was or wasn’t communicated to you about that lease. We also see in October where your children were changed to occupants with Chantell and a lease was sent to you with the rate of (rent amount) for 12 months from October 2023 – October 2024, which was signed and put in place.
I know you mentioned you had some conversations with Pamela, but if any price changes were to take place during October or November, she would have emailed my manager, Jenny, for adjustments to your ledger. I became involved with your charges during December/January when you were being charged month-to-month fees incorrectly since October. Those were removed to make your ledger the correct price reflected in the signed lease.

Yes, Pamela the previous management left in November and that's when the emails between us stopped.. I went into the office and saw we had a new team.. I have email trail with conversations to Pamela about this issue before she left.. So Pamela never reached out to Regional before she left!!!! So once again they dropped the ball and I got screwed again..But I still have proof that I signed and was not granted the lower rent because the team did not diligently look in the system for the signed lease, along with emails of me communicating to Pamela about getting this fixed.. I dont understand how they wont make this right, and want to know is this ground to contact a lawyer.