Be warned of MTN's ********* & ********** practice

I upgraded from a package where I had a Blackberry handset to a different package where I have a Samsung S5. For the past year I have been paying R59 per month, i.e. (R1062) for BIS blackberry service which the consultant was supposed to cancel, since I was no longer using a Blackberry handset which they were fully aware of. The consultant today cancelled it immediately for me and said that this should have been done with the upgrade, but that there is nothing I can do about it, \I've lost that money". That is both ********* and consciously **********. I requested to cancel the contract and they charge in excess of R3000 cancelation fee"