DSTV call centre madness

I am really sick and tired with the service I have been getting from their call centre, yesterday alone I called 5 times, ran out of airtime on each attempt, they put me on hold and tell me they are investigating, they say I owe R2093 whilst I activated my account on the 29th of May this year, I used to have an account back in 2011,now someone has been renting movies using my old account, told them it isn't me and it's their fault also that when I deactivated my account they left the box office on my name, now... My services are stopped and no one helps me... I'm definitely not paying the 2k...for my current services I need to pay about R350 so that's all I'm willing to pay... I'm gatvol.