bad service

i have 4 contracts with telkom 2 were due for upgrade in Nov-2015 however i decided to cancel the contracts,when my Nov bill came it was incorrect i then call them i was given a ref number and promised to be called back within 7 working day but that never happen,01-01-2016 both the numbers that was supposed to be cancelled there were still active and loaded with minutes and data,02-01-2016 gave them a call again to ask why my numbers are not cancelled i was told to wait they will call me i waited for another week and called again and then i was told that my case was send to the wrong dep..an-till now i have been calling almost everyday but no help last week all my lines were suspended,i called the asked to speak with the manager she promise to help me <br> but today is the 28-01-2016 my phones are still suspended i have not receive a new invoice and my two lines are still not cancelled,just finish speaking with one of the managers who told me the story that i must wait they will call me,please help what do i do in this case.