Where to start -- took our vehicle in last year to...

Where to start -- took our vehicle in last year to get recalls fixed; however, was told by the technician they had nothing on file despite the notices I showed from GMC. Then, was told we should get those repaired at the dealership where the vehicle was purchased. So, fast forward, Sinclair GMC fixes the recalls...but decides to conduct a 'free inspection', whereby they stated we needed over $7000 worth of repairs, all of which could be addressed at HALF or 3/4 of their listed price (on a 2011 Acadia). So, our experience with this service department has been very poor since last year. Do not recommend.