Coinbase will close their doors forever before honoring price lock removal. You took a risk, one that is a lot harder to read than the Fed-drunk stock market.
From what I can gather coinbase makes their money by throwing away or backing out transactions they would take a loss on. You sir, gave them $35k for digital beanie babies. You get what you pay for. And you did.
Why aren't you buying btc at an exchange? Were you planning on moving them?