German Motorwerke

I took my car to them for an oil change and a couple of other minor things and let them know that I had trouble starting it when the engine was cold. They told me nothing seemed to be wrong and that it started fine for them. I pick it up 3 days later when they call me to tell me it's ready and Ricardo has to use starting fluid and a battery booster to get me going. I would have stayed and yelled, but I was already late for work. He told me the valves probably needed to be adjusted. yeah. Fast forward a week and I drop it off again to give a chance to make things right. I didn't hear anything so Tuesday of the following week I give them a call. Ricardo tells me it we be done on Thursday. I told him I don't need it till Friday and to take his time. I call Friday and someone there tells me it's not done, Ricardo is on vacation and it will be ready on Monday. What?! I show up Monday and pay for the valve adjustment (which wasn't the problem) and they use starting fluid to start