telkom is a **** angry business owner

i am having endless problems with telkom last month i recived a call that they upgrading line speed in my area i asked if the is any addition costs involved and the cll centre rep repoed no when i recieve my bill they added biztalk to my account i did cancellation for biztalk and now im being charged a cancellation fee and still being charged for biztalk . i had this service previously and did a cancellation why would i take out this again the other issue im having i had a anither business line which was cancelled 2 years ago till no im battling to get my deposite that was paid. and i was charged a callout on faulty line which occurs every month