Appalling service

Three days after collecting my serviced Alfa the engine had a complete loss of compression.<br> <br> It is now 8 weeks later and I have yet to receive a diagnosis of the problem!!!<br> <br> To date I have been told they suspected an issue with the head gasket, however after inspection it was not the case (sent to engineers). This was week 2. Since then they indicated the issue could lie with the hydraulic valve lifts. 6 weeks on and they still cant confirm this is the root cause of loss of compression.<br> <br> Over the 8 weeks I have visited on 4 occasions for an update and each time they could not give me a proper diagnosis. I requested for telephonic updates. I got a call every fortnight and only recently a weekly update. <br> <br> I have yet to experience such bad service from any dealership. Week 9 now and still without my beloved Alfa