Very poor service

I took my 2014 Mazda BT50 in to have the turbo replaced, and the aircon checked (under warranty), on Thursday 12 March 2015, and received it back on Monday 16 March 2015. I received it back dirty, and apparently I did not have to sign any paperwork on the work performed.<br> On Tuesday 5 May 2015 I phoned the workshop manager (Warren), informing him that the problems persisted, and actually is getting worse, and I queried whether the work was actually done. He then said that he will draw the job card and call me back on Wednesday 6 May 2015, which never happened.<br> I phoned the dealer again on 14 May 2015 at 10h20, and was told that Warren was in a meeting. The lady attending to my call said that she will ensure that he calls me as soon as he returns from the meeting. (It is now 16h00, and I am still waiting).<br> Seems like I will have to revert this to Mazda South Africa, for this type of service is not good for their company.