Bill limit set and confirmed yet ignored

At the end of October 2015 I contacted MTN via email to ask for assistance in setting a new limit for the *** data sim card from R500 to R750, yet since then the account has soared to up to R5000 in December.<br> <br> Every time I try to contact MTN agent (Tembelihle Makeng) I receive either a cryptic message or no response at all. I spent several hours at Tokai MTN Branch (Blue Route Mall) with Funeka Mcuba who also apparently can not get any clarity on the exorbitant charges, and she is a full-time MTN employee. <br> <br> The *** number is used for data only for my business internet hence the limit/cap yet due to the thousands of rands being debited out of the business account without explanation from MTN my staff have still not received their full wages for December as we budgeted only R750 for the business data expense.<br> <br> I'd like to know:<br> 1) exactly why I am charged such an exorbitant amount monthly.<br> 2) when I can expect the over charged fees forOctober, November and December reversed so I can pay my staff their full wages for December.<br> 3) What steps MTN will take to ensure that I am a happy client with a positive brand experience.<br> <br> <br> <br>