The man called repeatedly after I told him that I smelled a scam. I told him I had already been refunded by a believed "trap setter". That company called themselves Sanvi. They were based out of a home in a residential area of some city in California. That was a few years ago. This man claimed I had a contract with them back in 2016. It could have been that time period, I don’t remember, that I had dealings with the "tech service" that claimed to be a contractor for Microsoft Tech Support. I was refunded, however. I called the credit card company and also filed a complaint with the FTC. I just watched a youtube by ScamPulse.com that explained that these scammers keep their victim list and return with a refund scam.