Their DQ track interfered with my onboard computer

The DQ track interfered with my key-less locking system I spent thousands sorting this out only to locate the fault in the DQ track which was not installed correctly. I complained, sent in even print out from BMW, but still now after 3 months discovery have merely ignored this issue. They did replace the dq track but guess what, that one does not work either...<br> The worst part of this is that the client call centre could not understand the complaint at all. They kept thinking the second repair damaged the car.<br> My advice, if your car is valued at over a few hundred thousand or you have a car that has many control units, stay away from DQ track, they do not take any responsibility for damages.<br> I do not want any further person to work on my car even though the dq track does not work. This is a consumer notice only.<br> Do not phone me for another repair appointment etc.