Worst service ever

Catalytic convertor was ****** out of my Vehicle while at DVN exhaust was nicely welded back, (then replaced with another second hand CAT after I confronted Waldo) BMW badges was ****** of my mags, then was replaced. Big sign: "We are not responsible for any loss or damages" Oil pressure light kept coming on after the engine was overhauled , Drive train light coming on both pre and post Cat sensors faulty after the engine was replaced, as they couldn't sort the oil pressure problem out after the original engine was overhauled, BMW has a conversion on the turbo pipe, as oil leaks to the exhaust and causes smoke when the car starts (after standing for a day or two) This pipe was replaced with the original type of pipe, so the car is now again smoking a lot on start up with the "new" engine. On the first service after the engine was replaced I found that there were 3 different brands of spark plugs in this engine. 2 same and the other 2 both different. Car was taken to DVN in July 2022 and I took it back about 6 times, received it in October the last time, some times it was there for 3 weeks at a time. the last time I collect it, the coolant pipe come of from the radiator on my way home. I am to scared to take it back as most of the times something disappeared from the car. Waldo told me he is in recycling of catalytic converters. When I complained about the oil pressure light, they wanted me to pay for a new computer box but the fault was in the engine that they overhauled. Waldo told me he bought the business from Dennis, and he is not taking responsibility for things that Dennis done. Although they where both working on cars at DVN during this time.