made a deal with this individual and once I paid they raised the price and asked for more money.

This person made a deal with me and I was extremely careful to verify the details of the transaction and once I paid they decided they wanted more money. I was not willing to pay $700 more and asked for my money back. They asked for my btc wallet and said they would return my money. They instead reviewed me with one star and they accused me of scamming them and not paying I have proof of payment and screen shots confirming the deal and of them demanding more money. I also have screen shots of them saying they would refund the my money yet they instead came on here called me a scammer with multiple accounts. I have one email and it is the same as my user name. Do not trust. They will rip you off. Also lied and said they were the actual person yet they are not the person who owns the account even though they claimed to be.