I have a customer who placed an order like usual, we went through and set up a trello board and a git with a plan of where we were going to develop his server, all is normal so far, buyer is very cooperative. After around 5-6 hours of work, I’ve completed all of his requirements in the scope plus some extras that I felt were fundamental to the security of the server and at this point I noticed I’m kicked from the trello board and git. I queried the customer about it and 48h later he replied saying they wish to cut ties due to quote, “we saw how you talked to people on discords” end quote and that they will be charging back. I’m not sure how this has any relavance to my professional account especially since my discord is not only an external account but is in no way linked to my fiverr profile, does not have the same name, picture or anything but regardless I have not in my personal opinion verbally abused any person in a public discord whilst representing either myself or my pseudonym. What should I do in this situation, am I going to lose out on my time and money here or is this a salvageable situation?
Edit: I do have screenshot evidence of all the work done on the trello board and github as well as proof that the customer removed me and proceeded to ghost me.