As an observation... and dealing with those same issues but not as bad.... WHY do they collect the money up front before they do any work? They have complete control and possession of the engine. If I were building engines I'd tell you "the engine is ready"... THEN you pay and I ship.
As anyone, and I am one, who used them in the past pre-covid, this is their business model, you order your repair and pay with paypal, that gives you 6 months of fraud coverage, I had them do a motor for me back about 7 or 8 years ago, no issues, sent motor in, paid on paypal, motor sent back with in 6 months, because, it took longer the he said, gave me added year warranty, great, now I need an another motor done, FYI, first one was a 700 CC, this on an 787 CC, and this one during the covid times ( April 20 2021 ) when everyone was having supply issues, he said it might take a bit longer, I trusted him, he even responded to an email on Jan 5 2023, that everyone would have their motors in time for summer, send emails in in may checking and got no response, sent mail no response, contacted BB and they got no response, now you call, voice mail full. No I guess I am going to get legal help and see what will take place.