Very ***********!!!!Unauthorized limit increase on contract plan

<p>MTN has been disconnecting my line for the past two weeks and every time I called to check why my line was disconnected I was told that I had reached my limit. I am on top up plan and I asked how my account could have reached the limit but none of the call centre agents could explain why but kept reconnecting my line. Then came the debit order that had extra R3188.00 taken from my account. Upon inquiry I was told that I dialed a USSD to increase my credit limit from R0 to R3188.00? on my data account. I did not dial that USSD and I did not request a limit increase. MTN cannot even provide me with system logs proving that I did indeed dial that USSD and system logs that indicate what was done on the line that could have possibly maxed out R3188.00 within two days!. No credit vetting or affordability check was done to approve this limit increase???? Not forgetting the fact they have no sense of good customer service and take their time to respond to queries if at all. I logged this incident on the 20th of June 2016, two days later I received a vague report that I couldn't make sense of. I then responded back requested clarity but to date MTN has gone mute......Very ***********!!!!</p>