Baustech, first time i heard of them. I take my Bimmers to NEM BMW, i really recommend them. I know one of the partners and is a very honest guy. They also look cars of WBM, when the problem is too difficult for them. Needless to say that all of the "cacho" cars of carmona, molina, munchen garages also end in NEM.
I notice you weren't chilean, CD plate... cuerpo diplomatico.
I'll send you a PM later, i am little busy right now.