MTN **** , BA*** , 073...0171,

I have been with MTN for 20years now, each 2years I upgrade. After MTN informed me it's time to upgrade I did. They then started overbilling me. They now claim it was a 3year contract and not 2years that I now upgraded early. 14Months later and 20emails to various complaints departments still nothing. They can't produce a contract but want to keep me liable for cost. Evelyn forged my signature on a subscriber application form that they now want to use as proof of a contract. Cant believe a company can get away with this.