Excuses to not repair or give new tablet

I was bought a mobicel tablet at pep in eastlynne Pretoria last year February as a birthday gift. In October I was at work sending a WhatsApp when the screen froze and about 30sec later it just went off. I tried to charge if and nothing happened. Two days later the person who bought it returned it to the store in the box with everything and the male "manager" was rude and unhelpful, he then told them that he can't find it on the system and they must not waste his time and take chances. The following day I went to the pep close to my work to enquire about what to do about this tablet that is still under warrenty( did not have it with me) the Manager there was very friendly and helpful and told me I can actually go to any pep if I still have it in the box and they can send it for repairs. That weekend I took the tablet to kolonade pep and they booked it for me( in this time the slip got damaged and was in readable) it was at mtn for a month before I got a call saying they will not repair it if they don't have an SKU number that shows on the slip. I went to fetch the tablet at pep kolonade again and took an off day the following week to go to pep eastlynne as I was told the pep it was bought at can do a reprint and send it in again. When I was the the lady who called herself the manager was very rude also and told me she can't do reprints I must rather just buy a new one. I went back a week later after phoning their head office in Capetown 3 times and the customer care a few time and got hold of the real manager Portia who was VERY helpful at the time and just to find out she couldn't do the reprint as the system doesn't allow her too. I left the tablet there and she said she will try to sort it out and get back to me. After her and myself contacting helpdesk and customer care numerous times the area manager contacted me to say they getting a courier to fetch it and take it to mobicel. I got a call a day after the warrenty expired from pep saying the phone has water damage so they can't fix or replace it I must come fetch it. When I fetched it I asked for the report from mobicel to see for myself what the reason was and after having to make a huge scene in the store they gave it to me. On the report it states that the board is Burt so in that case and or water damage they do not rapair. The photo provided also shows the board burnt by charging block and no water damage as I was told the reason being the won't replace or repair it! Word if advice to anyone who reads this never buy a electronic item from pep because if something is wrong with it they will give you the run around and make sure your warrenty expires before you get it sorted out.