Complaint

I have been with MTN for as long as i started having a cellphone in my life which is over a decade,The service have always been a fan up until i decided to take a contract with a company 3 years back don't wanna lie your contract are so unfair mere fact that you end contract paying almost double your initial payment.I was done paying your cellphone..Than i upgraded to data cause i found that deal cheap considering my work was paying R110 ...May i received a call offering to upgrade my data deal again i refused like i told the guy where to get off the next thing am being billed R300 for 15GB that i have never subscribed to....i want assistant with that you always say you record calls so i would also like to hear where i agreed to this new changes on my bills.