Cancellation of contract

I have been querying with telkom mobilr call centre as to when I should cancel my contract as it expires on the 29/01/2016. the consultants failed dismally to advised of a 30day waiting period. On the 28/01/2016, i had to be advised at the store about this period and I signed my life away! Given failure on telkoms side to advise correctly. On the 1/02/2016, telkom loads data and minutes as per the expired contract pack. Call the call centre to remove this allocation and I'm being told of 20 day cancellation periods before they can do that. I will not pay for this data. Its bad enough I have to suck up failure by telkom but the audacity to tell me about terms and conditions when their staff fails on all levels. Your service is despicable. None of your consultants seem to know how to deal with escalation. From store consultants to call centre. Even your team leaders seem to be aware of how to deal with queries, they are there to baby sit staff. I want this data removed immediately