Where is my Tablet?

I booked my Tablet in on the 21st Jan 2015 for a basic repair, and was told it would take 6 weeks for the repair to be completed. To date I have not received the tablet back, nor feedback on what is happening. I have been into the store where I booked it in 4 times since then. The main Telkom service centre says they have no record of my tablet being booked in and I should enquire at the store. Today I have called the store 10 times with no answer what so ever. For a telecommunications company, there is no communication between themselves or the customer that I can see