Engine etc

STEER CLEAR! Sunoco 9395 Baltimore National Pike! I took my Honda in to have a diagnostic run on why the engine light was on. I worked a full day and walked back over after work to get a run down on what was wrong. The service guy went through a list of 4 items that needed to be done on the car - 1 was urgent, 3 were not. I went through the list one-by-one with him and confirmed my wish to hold off on the 3 non-urgent items. He confirmed that they would perform the 1 urgent repair, that they had been able to flip the engine light off (no explanation given), and that it would be ready in the morning. I went over to get my car the next day at lunch. The invoice was $572. higher than we had discussed. I immediately asked for an explanation, which seemed to annoy him. It turns out that they had completed one of the non-urgent repairs that I had explicitly said NOT to do. He knew this; he wrote it down when we discussed it. Not only had they done work I told them not to do, but their solution to the situation was for them to keep my car another day and reverse the work they'd done. Because I wouldn't need my car? Seriously. That was as creative of a solution as they could manage. Clearly this particular Sunoco is not interested in retaining long-term customers. I will drive back to my old mechanic now even though he is a half hour away since I moved. I was hoping that I could make a good neighborhood contact. I was wrong. They had my wife in tears. Very sad and terribly uncomfortable transaction