Cell C just keeps billing

I upgraded my contract with Cell C on the 30th of December 2012 and the<br> contract only came into effect on 30th of March 2013. According to the<br> signed contract of which I have a copy the monthly amount to be paid by me<br> is R 112,00 for the first three months. Thereafter the monthly charges was<br> set at R 149,00 for the remaining 21 months. I started paying the R 112,00<br> on the 24th of January 2013 until the 30th of March 2013. I then started to<br> pay the amount of R 149,00 on the 23rd of April 2013.<br> <br> The contract in question has been canceled and changed to prepaid on the<br> 30th of March 2015. I use my cellphone for business purposes and as of<br> today I cannot as cell c has suspended my line. According to cell c<br> customer care I still owe an amount of R 149,00 for the period f March<br> 2015. I have requested the statement for March 2015 and have yet to receive<br> it.<br> <br> I am querying the fact that according to cell c I still owe an amount of R<br> 149,00<br> <br> I am not getting proper answers for the customer care department and have<br> been told that I must first pay the amount before any action in will be<br> taken to activate my PRE-PAID line.<br> I would like this matter to resolved a.s.a.p as I do business with this