So I have an order from this customer to develop a bot (700 USD worth). After the first delivery 3 days ahead of deadline, he requested revision stating that "The bot doesn't work" without any additional information. I asked him for information about the revision, but he kept ignoring me and my messages for 10 days straight. When the order is 7 days late I decided to request for deadline extension and magically he rejected the request and then sent me a bunch of complaints. I felt like this will be a scammer and I don't want to hassle with this anymore, so I would want to request for a cancellation. But what should I do in this situation so that the cancellation won't affect my gig stat?