Disgusting customer service and even worse accounts department!

Most disgusting service from MTN! Accounts department has NO clue what they are doing and claim we are in arrears when in fact we are NOT! As a result, won't do our upgrade. 3 payments have gone unallocated, yet WE are in arrears?! No wonder you are losing customers and there are so many complaints here and on fb. Get your act together! I am reporting this to every single controlling body you belong to! Customer services has no idea how to sort this out, and their manager is even more clueless - and arrogant! When he realized his mistake, started backtracking.