I want my services resumed

Cell C suspended my data line on the 2/04/26 I made the payment on the same day it was resumed they suspended it again last yesterday when I called them they told me I'm owing them 2 months subscription and that is incorrect as I have made payment in the 4th of March and the 2nd if April they're the ones that are owing me.I must express my feelings I'm as mad as hell I use data for my work day and night had to spend extra money to buy data yet I've paid for my services