Faulty Tablet

Two days after my Tablet's warranty expired it started giving problems by not charging. I booked it in at Samsung Brooklyn. After several unanswered telephone calls I went there on 2 April just to hear it has been there and finished for so long already. On receipt of the Tablet it charges but just kept on constantly resetting itself, a problem which it didn't have previously. I took it back on the 7th of April. As from that day it is a mammoth struggle to get Ken and Damien so far as to tell me what is going on. IF and please note IF I get hold of them I am just promised they will follow up and report back but needless to say it never happens. As a last resort I contacted Samsung's head office and logged a complaint at zwelithini. Yesterday (16/4/2015) he phoned me and told me that it has been fixed. Today for the whole day I was trying to get hold of Ken and Damien to tell me whether it was back at the store and fixed but to no avail. I had even sent a mail to zwelithini as well but he also did not come back to me. I am again without my Tablet for 10 days now but for a problem which it did not initially have.It is not a bad service, there is NO service at Samsung