Extremely Poor Customer Service and Incompetency

I reported my phone ****** through MTN 808 agent on 01 Sep 2015 and the agent promised to send e-mail confirming suspension of sim card. Upon arrival at work on 02 September no e-mail was sent, I phoned once more for the suspension and block fone and I was sent an ITC ref on e-mail. This agent brought to my attention that my account had accumulated charges of R 38 200 and they could not view the activity that led to this amount since my billed statement would on reflect 14 September and was told to wait, while waiting the amount continued to accumulate to R 43 888.54 yet my account has a credit limit of R 300 to protect my account. Immediately after the 14 I phoned 808 numerous times and I would be given a million reference numbers for my call and advised that a Manager will be in contact with me as a request is logged. Since 3 Sep up today I would call to follow up but I am sent from pillar to post by the service providers *********** agents and I have to repeat the same damn thing each time I speak to these agents yet I am told that I query is logged. 18 Sep Ncebakazi Filita sent e-mail to say I am liable for the charges as I did not suspend sim card, that was it from MTN, really