******* subscription services

I m MTN contracts user for more then 5 years already. I have various contracts active with you. I m constantly getting this unauthorized and ******* subscription services added to my accounts. I keep on wasting my time in order to cancel them. it is quite irritating to call your call centers and deal with various ppl that promise this won't happen again, and then one week later you again *******ly add another subscription to one of my accounts. I m sure you are in direct breaching of some kind of act in the law when you without my knowledge or approval just add a third party subscription to my account. This must stop immediately. Other wise I may just forget to pay my bills until my problem is finally sorted.