This person is either mentally retarded or mentally ill. He will deliberately misinterpret your words, he will claim that you have said something to him and made some promises. In fact, you have never said these words.
Can't communicate with him normally. His behavior is suspicious. And like to keep changing his own story. After that, we really found him annoying and had to give him a full refund to get rid of him. I suggest you blacklist him, instead of wasting your time on a idiot who can't bring you any income.