Bad Service.

We have logged a call with dell in December 2014 and Paid for the repair. Dell sent a technician out to our business on 3 occasions now and the problem is still not sorted out. Ref: SR#: ***. This is the 1st time I am experiencing such bad service from Dell. The thing that bothers me the most is the fact that they don't even have the common courtesy to call and give me feedback on the problem or eta's. I would think as a paying customer that Dell will sort this issue out. Its almost 2 months now after PAYING to get the fault resolved.....