Can a landline be terminated or not?

During March 2015 I approached Telkom office in Klerkdorp to terminate a landline. Was informed to phone 10217. 10217 had a recording on saying they are on strike, phone 10210. 55 min. later got told to send email to<br> STOCST. Sent email on 31/03/2015 for termination on 30/04/2015 with ID and letter of cancellation and received confirmation. The line was however not terminated and bills kept coming. Resent request to STOCST. Phoned 10210 again on 14/5/2015 FROM A CELLPHONE. Spoke to Melani. She assured me that it has been recorded and backdated and will be attended to asap with ***. To date we still receive an account for rental which has grown to R1500 by now and I cannot get the line terminated. Am I to pay for this for the rest of my life because you cannot walk into an office to speak to somebody? Is it at all possible to terminate a line without waiting for Telkom to try and sue you for non payment and then take them to court?<br> HELP PLEASE. IS THERE ANYBODY IN TELKOM STILL WILLING TO DO THEIR JOB?