Poor service /no feedback/no customer service

I currently have a contract that i pay R329 For the pass 1 and a half,last month i got a bill of R829,Went to the v&a telkom store spoke to david and he logged a call and that i would get feedback in 48 hours.two weeks went by heard nothing got no calls,went in to the store daivd said nobody checked on my claim.i then stopped my debt orders on this account untill they got back too me.todate nobody got back to me and my account was suspended.took this contract out for my wife and because its suspended she cant make calls or keep in contract with me,we also have a newborn so its unexpectable that i cant get hold of her due too telkom with i pay every month without fail.i then spoke to nicholas the regional,who said he will deal with it.todate its been 5 weeks with no feedback.the staff at telkom even went as far as telling me to complain on hello peter.two days ago i got another bill of R1500,which makes no sense.normal bill R329 so cant deal will with this.i would like to end my contract cause these people are all about the money and not the people.