Unable to resolve incorrect interests on my account

<p>Vodacom has been making promise to reverese arrears the reflect negatively on my account, last week when i tried to contact them, no one could assist me as my account was in arrears nearly R500, today i went only my account is in arrears nearly R1300. I'm collecting names and apologies and the latest was, i have exceeded my attempts to call vodacom and therefore all my calls will be charged. When i complained about the device i have, i was told they cannot access my account due to the first amount increase. I was sent from pillar to post, i was made promises that this matter would be resolved, that my accounts would be in positive, but nothing has been done. I dont know what to do any more. Vodacom knows all the apologies there is, all the excuses they can think of, but the problem still remain, I sit with a phone i couldnt return withing the 14 day period because my account is in arrears, i cannot get my upgrade account airtime to be loaded because my account is in arrears. I have been making calls to the upgrades department, i've written mails to their customer service, yet no one contacted me. I'm so disappointed that this is they type of service we are getting in South Africa.</p>