[Ravina]

I have been having problems with my dealer on an issue with leak for some time now. The oil leak began immediately after a service with them. They said they did a thorough check and the leak is not related. As a result I am paying a large amount of money after they diagnosed the problem twice. I signed the estimate for the charge. They have now called and said the problem may be worse. My question is this, is my only recourse dealing with them directly or do I have to call BMW Canada. Better yet, if it gets really bad, is there an association that I can call to support me, maybe even BBB. Plesae help, I don't want to go down this road but feel that I am getting totally screwed. I am assumimg they can't charge me more than what I signed for if repaired already and I did not authorize anything further.

thanks in advance for help.