My vehicle was booked for a premium service (£240) which was carried out on Tues 4th Jan. When I next drove my vehicle on Saturday 8th Jan, it was pulsing on idle, the abs lights had come on & when acceleration was applied, the car frequently didn't respond (which I discovered at 65mph on a motorway) When I opened the bonnet at home, I found that the oil cap was missing & there was a lot of smoke coming from the exhaust. I immediately called the garage who wanted me to drive it into them, I refused to do so without an oil cap, so they offered to send a mechanic out (maybe 10mins from location) with oil & a temp cap which I was happy about, they took the car to the garage for diagnostic. The mechanic said that is was possibly a pressure issue caused by incorrect instalation of oil cap. The mileage was noted on service paperwork to show it hadn't driven since the day of service. I was happy about this, I understand that things can go wrong and even the best mechanic can make mistakes. It's how the mistakes are rectified that is important. I feel that coming out with a temp cap & making my vehicle safe is the least they could do. When I enquired about financial compensation, the colleague said that them coming out to my address was compensation and I'm not entitled to anything else. I didn't pay £240 for them not to install the oil cap properly, potentially damage my engine, catalytic converter and the inconvenience to have to source my own replacement vehicle last minute (I had work at 05.00 the following morning) I feel that if something trivial as not fitting an oil cap properly wasn't carried out, what else was missed and how does justify not refunding the price paid for service after all of the inconvenience & mistrust caused. This is a shame as I wanted to regain trust in the location but service recovery was not good enough.