Exstream bad services

In December I took my Samsung tablet for repairs. 3 Days later it was repaired and I was able to collect it. On the day of collection I received my tablet and paid the amount for the repairs. Sad to say that when I tried to turn it on it still was not working. I phoned them the same day to inform them that it is still not working. I then returned it to Vodacom shop for re-repairs. This is where most of my struggles started. When I call them I am told they will get back to me, this never happens. This happened numerous times after about 3 weeks later I was told that they could not fix my tablet and was told they would refund me. I then arranged with them an exact date and time I will come to collect the tablet and my refund. On the arranged date I received the tablet but not the refund. We then arranged for a EFT due to they had insufficient funds available. Nevertheless no EFT was done and it cost me again to drive to the shop to collect my money. I requested that the owner phone me who in return then called me later. The owner Herman was very arrogant when I told him that I was not happy about their service. He then told me I received my refund and that we are done.