Waiting more than 3 weeks for spare part

I have booked in a HP Printer for repairs at Ensure Services. The unit was booked in on the 17/02/2015. I have the Job Card number which is ***. I received a quotation. Payment was made shortly after. It was said to me that the spare parts will arrive in no more than 2 weeks. I called constantly after the 2 week period to check if the unit has been repaired. Still there was said to me that they are waiting for spares. I called last week, the Wednesday, 25/03/2015, again it was said to me they are waiting for spare parts, but the one lady called Poppi said I should hold so that she can check with the technician. She came back to me and said the spare parts arrived and that they are busy repairing the unit. I called again yesterday, 30/03/2015, to check if the unit was repaired, yet again they told me that they are awaiting spares. So what the hell is going on over there?? I spoke to Poppi, to Rafika(not sure about the spelling) and to a Peru, or someone, I could barely hear over the phone because he stutters non stop. <br> <br> Very unhappy and very frustrated.