as others have stated, this couldn't be more true. it's tough, i bought my truck from a dealership with a fantastic salesman. i've bought 3 Fords off him in the last ten years and he always makes me feel like i got a solid deal. their service department is uhh.... hit or miss. fantastic with TSB and warranty repairs years ago, but lately they seem to be trying to avoid work, and just generally have done some dumb stuff. so here i am, with a fantastic salesman (who will actually go harass the service department on my behalf if they aren't being helpful), and a sketch service department....These dealerships are hit and miss. In bike world we say "you're shopping for a bike shop, not the bike". Clearly that addage is the same here.
sorry your dealer sucks OP. sounds like nearly all of us are in the same boat. trying to find that oasis of superior service that has only been a mirage for far too long.