Surprise external charge. Please advice
Hello, I would like to ask for advice on a recent situation regarding a surprise charge.
I had to get a blood drawn for a TB screening for college. I had a couple visits to the same clinic and I did paid them through their app (I have receipt). Now, one month and almost two weeks later, I got a letter in the mail that I have a bill to pay from a laboratory which is the one that performed the screening. The day I got my blood drawn I do not remember being told about this or signing a document that informed me about an external extra charge. Researching I found about "no surprises" act from 2022 and the "good faith estimate" and how it could appeal to this. While I can pay it, money is short because im leaving for college and i would rather not pay it especially i am right in that I was not informed that there would be an extra charge. If somebody knows what would be the best way to proceed, advice is welcome. thank you!
P.S: The extra charge was for $280, and everything was self-pay. This happened in Arizona.