disgusting service

On the 19.11.2015 i purchased a netsurfer sharp tablet for R1000.00 for work purposes.On the 7.12.2015 I took time off work to return device to store as it was not charging, I received it back 23.12.2015, due to holidays I returned the device on 28.12.2015 as it was still not repaired. I received it back 07.01.2016, still not repaired, on the 08.01.2016 I contacted netsurfer and was informed that i must return it to pep and they were going to replace it. today is 19.01.2016 and when i phoned netsurfer i am informed they do not have the device, i speak to pep Nigel they inform me they do not have my device. I want my money back as this is not acceptable, as i bought this device to assist me in my job and after 3 months I look like the idiot. When i ask Pep Nigel for head office phone number i am told that they do not have it.