overbilled

<p style="color: #555555;">Hi</p> <p style="color: #555555;">I missed 3months payments for my mtn contract Wich I am paying 710 per month.</p> <p style="color: #555555;"> </p> <p style="color: #555555;">I received an email from mtn debt collecters stating that I owe 4400.....wich is ridiculous</p> <p style="color: #555555;"> </p> <p style="color: #555555;">Please reply via email coz I don't have a phone</p> <p style="color: ********** <p style="color: #555555;"> </p> <p style="color: #555555;">I want to know why I am paying 4400 and not a lesser amount</p> <p style="color: #555555;"> </p>