Cancellations Dept No Feedback

I have been trying since 8 Aug 2017 and before that to cancel 3 of my lines,to take to them back to prepaid, everytime I phone in, they put me through to cancellations dept,then line goes dead,when calling back, they explain that is the only route,even sent emails,where they say I have to phone that nr, no one is getting back to me and nothing is being done to cancel these lines, very poor customer service,even branch in Kroonstad doesn't get back to me or when I went in, says call 808,very poor service, furious, end dates should have been 17 September 2017, I can't seem to get to give notice to cancel.....8/8/2017 sent mail, received feedback to call 808 and give notice.....10/8/2017 @ 7:38, told me to call back at 8:00 when cancellations open.......10/8/2017 @ 10:23 am - Called, Lindiwe puts through to cancellations, hold on for half an hour,put phone down........14/8/2017 @ 10:07 am - Line just goes dead,after putting through to cancellations.....21/8/2017-mailed again,still no feedback.......?????