Is USDC a scam, or is it legit?

Good afternoon, I met a Chinese girl called Lin, we talked a lot, I asked her if she invested in anything, then we got to the investment issues. She recommended a Crow platform. I put a low price, she helped me with trade issues, when to start and stop suggestions on buying or selling until the platform changed to USDC until then okay I made a withdrawal of 99 usd. Right after that I went to make a 490 one they froze my funds. They asked for 20% of my value so I went there I paid. I took money from the one I hadn't asked to the platform, if it was really that amount, they said yes, so I paid. They got back to me saying that it was past the payment period that I had to pay another 5% of the amount, which was a fine. I didn't have that money. My friend said she would help me but she would have me to wait for her payment to arrive. Then she made the payment, I sent her the platform's account number, she made the payment. Then the platform reported that my account, Binance ordered it to be locked because there were irregularities. I went after Binance, I did everything I could to do. My account is ok, I contacted the USDC platform and told them the situation. They sent me an email to wait and here I am with no response to my emails without being able to withdraw. And I've been 3 days without talking to my friend. My values appear on the platform but I can't withdraw them. I believe I fell for a big scam because I borrowed money to invest and now I'm at a loss. I pray to God not to but until then I don't know what I'm going to do about it. I would like some help please.