MTN MONDO IS THE WORSE!

I have a contract with MNT Mondo and their customer service and communication skills is very very very very bad, I have been paying my contact every single month and now they have disconnected my simcard and telling me i owe them money, and the amounts differ everytime they are speaking to me, please don't make the same mistake i did don't get a contact with MTN Mondo, everyone has the excuse they can not assist you and the they disconnect your phone and you must just keep on paying for a phone you can't do anything with, MTN Mondo is the worst place ever!!!!! With very bad communication and very rude people BE CAREFUL they will say you owe money and then you know and have proof on bank statements that you don't