FRUSTRATING TELKOM ISSUES !!

Cancelled my services with Telkom at the beginning of the year; had to report it to consumer@icasa as Telkom kept billing me for the wrong amounts; they were charging us for ADSL and Fiber so i received a double bill; they they confirmed cancellation and sent an email confirming nil balance; we then requested they RELEASE OUR LINE FROM VUMATEL as we have chosen another service provide which is VOX , i have contacted them only to be put through to I dont know how many ppl and i keep getting told our service is cancelled which is correct after it took them 3 months to do so... i now have been fighting with them since 18/02 to RELEASE OUR LINE TO VOX but they are not responding... This is becoming most frustrating !!!! Please can you assist