Vodacom poorest customer relations

I had a cellphone contract upgrade in July of 2016 at the cavendish datastore which apparently forms part of the tygervalley vodashop group. I got the phone(samsung s7) and a sim card for that contract on that day. On the 17th of April 2018 when I veiwed my statement an unknown phone number was on my list of phone numbers on the statement. I went to a vodacom store in tygervalley to enquire whose number that was. The answer was the number had been allocated to me for a samsung tablet that came with the contract as part of the red advantage contract. I explained to the shop assistant that i was never given this tablet when i did the upgrade. The shop assitant said i should go to cavendish to collect the tablet as it was supposed to be issued to me. I went to cavendish vodacom datastore to enquire, i was told that the assistant who assisted me no longer worked there and that the manager would be informed and they would get back to me the very next day. She never got back to me. Next afternoon i call cavendish store for an update. they tell me it takes 48 hours to investigate. On Saturday the 21st of April i visited the store to request an update. The store manager told me that her head office customer relations manager advised her via email that the matter has nothing to do with them since the shop assistant no longer works for them. They suggested i should call the police. I asked them who should i say is the suspect for the missing samsung tablet and how do i know the tablet has actually been ******. The manager could not answer my questions. She gave me phone number for the customer relations office in tygervalley that i called to be received by a answering service that does not take messages.