No contact from MTN before accounts was handed over!!

I changed my billing information from Individual to Company, keeping the existing number of ********** 569 and email address of **********

To my surprise, I found out I owe MTN money. Reason for that is MTN changed my account number (from C ********** to A ********** ) without telling me. In the mean time I was paying MTN accounts by going to MTN shop and giving them my cel number ********** 569 to pay the account.

Now that my account was handed over to the Shapiro Shaik Defries & Associates on 1st September 2017, They want to charge me R1700.86 (I only owe MTN R1462.39 and on the email Shapiro Shaik Defries & Associates wrote they only charging me R64.41 and R0.00 for interest.

I am FUSTRATED AND VERY UNHAPPY because of the following reasons:

1. Why is it that MTN does not even contact me by email or sms or phone me regarding the outstanding amount before it was handed over? A normal business would contact their customer if there was a late payment before handing over to the lawyers. But in the mean time I am thinking I paid my bills.

2. Why does Shapiro Shaik Defries & Associates says I owe them R1700.86, when I owe MTN R1462.39 and they only charged a fee of R64.41 + Interest of R0.00 = R1526.80. The difference of R174.06 unaccounted for.

3. According to Shapiro Shaik Defries & Associates, accounts was handed over on 1st September 2017 (and the lady at the call center says interest is charged daily) but they only notify me on the 7th September 2017 and they don't put my account number of MTN (C ********** ) as a reference number, but their own reference number. So as a normal person would do, I checked my phone for outstanding balance on 808 and there was no outstanding balance so I ignored it (thinking it is a phishing/***** email). I only pickup up that problem when I tried to upgrade another line on MTN.