Mtn upgrade

Mtn phoned me numerous times daily to upgrade, at first i didn't want to, the consultant then told me that they can adjust my plan because my device has been paid up, i dont need to pay that much anymore. According to them my upgrade was already due around 13 August.

Then i decided to upgrade my phone. After i was once again tortured with mtn phone calls and sms's

I upgraded on mtn website. Another consultant phoned me, and said they dont have the plan that i chose, (it doesn't exist) i had to choose another plan. When i was speaking to the consultant i specifically asked about extra fees/payments and was assured more than once, that there is no extra payable fees. I just continue on the new plan.

Now (early September) after receiving the new device suddenly i have this high bill. Contacting mtn via email, they said my plan is correct as what i chose, and after another few emails they said i did an early upgrade and still have to pay for the previous contract till november.

No one told me that I'm gonna have a higher bill AND I ASKED regarding any extra fees! Again and again they said there is none. Why keep phoning day after day and tell your customers there is no extra fees? Just to send them a huge bill they suddenly have to pay because they apparently did an early upgrade? Very disappointed with the lack of communication and information.