Putting wrong oil in my car and not willing to fix

<p>i took my car for service at Car Service city in Woodmead about 3 weeks ago,3 days later after iv fetched it, it started smorking and i thought it will be fine after some time, it got worse and i took it back for them to fix it, but still the problem did not go away, they told me it was Valve Stem Seals and it was going to cost me over R10k to fix, i did not understand how that could have happened after i took my car for service. When i call them they dont take my calls,they say they will call me back but they never do.</p> <p> </p> <p>I took my car to Bocsh Service in Midrand for a second opinion and they told me that it is smoking because too much oil was put in when they flush the engine at Car Service City, and not only that, the oil that was used was not the correct one. They had to flush the engine again and now it is perfectly fine.</p> <p> </p> <p>Car Service City is the worst.........</p>