Do I Have To Pay Botched Bill For Botched Ekg When The Aftermath Has Already Cost Me Thousands?

(Sorry this is so long.)

I went someplace a few months ago for a surgical clearance. This place came up on a Google search and had Sunday appointments -perfect! I never did see the doctor my appointmentment was supposedly with. I don't think she was there tbh.I saw a nurse for a few minutes who asked me basic questions, then I was alone with someone to take my blood pressure. She seemed pretty green (I've never had anyone struggle to take my blood pressure before but she did over and over and over.) Anyway, I'm super healthy and I just needed a couple of standard things, and these are medical things they've been trained on so I was sure it would be fine.

Anyway, she takes an EKG, and then says she has to do it again.. then she says she has to get the nurse. Nurse comes in and says they can't clear me because I have a (some word that means a badly damaged heart). I ask what that is. She tells me very matter-of-factly that this is damage my heart suffered during my last heart attack. I tell her I've never had a heart attack. She says I clearly did, it must have happened in my sleep.

I'm freaking out, but 2 medical professionals are saying this is true and seem to additionally think I'm going to go at any minute so I believe them. I'll never forget the way they both looked at me. They told me multiple multiple times to call 911 or go to the emergency room if I gave ANY heart attack symptoms.

My heart already was racing from the multiple increasingly painful attempts to get my blood pressure, and my anxiety - first over how long this was taking, and then.. all this new information about being a frail heart attack survivor.

Long story long, those feelings in my chest didn't subside. And I know it's stupid, but I kept trying to Google if this was a heart attack symptom or not and I could not get a clear answer. Finally I realized I'd rather be wrong than dead, and I went to the ER.

By that time I was fully accepting my fate. Ever since they had said that, I realized that this might be my last day on earth. By the time I went to the ER I believed there was a good chance it was. I was ugly crying because my will was out of date, and there were odds and ends I wished I could take care of first. But I mean, there's nothing I could do now, it's over. It's silly in retrospect but it was a really hard night.

Anyway, at the ER the EKGs did not show any heart damage at all. I had in fact, never had a heart attack. I had many EKGs over the corse of the night and they were all fine. I still had the paper printouts from the first place and I learned:

The charts don't even support the diagnosis they said of a badly damaged heart. Because the line would have gone up then down (or vice versa, I don't recall)

The most Sr. Doctor said he could tell exactly what happened. The stickers were not placed on me in the right places, they were too low.

The doctors at the ER were a combination of disgusted and amused that the bad EKG had landed me in the ER thinking I was dying.

So far I've had to pay around 5k for the nonsense that happened, mostly from the ER costs. Extra money I didn't and don't have.

The first place keeps sending me a bill for 300 bucks and they say it will go to collections. What are my options? I not only don't want to pay that, I want them to pay me back for all the other money I'm out from their negligence. I feel that's the least they should do given that they made me believe I was literally on death's door. I can't afford a lawyer I don't think, and I don't want bad credit, so maybe I have to just suck it up and pay it, idk.