Vodacom Hillcrest incompetence

I would like to bring to the attention the poor service that we are currently receiving from Vodacome Hillcrest. Over one month ago my computer witch is on my vodacom contract was taken to Hillcrest vodacom where a incredibly rude assistant took my computer without obtaining the required details from me. We were informed that our computer would be sent for repairs the next day. She copied the fault down incorrectly. After aproxametly 3 weeks we went into the shop to enquire about my computer only to find out that it was still in the office and have not been sent for repairs. I then asked to speak to the manager only to be told that he was not in the office that day. I contacted him via phone. Ayanda (the manager) informed me that the computer had not moved from the shop as he was waiting for a proof of purchase witch was not necessary as this was on contract and not bought as I advised when dropping off initially. Amanda informed me that he would look into the matter and come back to me. That eve ending he advised that all was sorted and the computer would be sent off for repairs A week later when I contacted him again to accertain the status of my computer I was advised that it was still in the shop and have not moved. I then became irate although this had little effect as we have paid 2 months installment without having the product. We have been trying to get information for the past 2 days as to the warehouse of our computer but seems that Amanda and his manger Jessica is now ignoring our calls. And we are still nun the wiser as to where.oir computer is.