Out of contract payments

I recently visited the Telkom branch at Gateway Umhlanga regarding both my cell phone contracts on the 28/11/2015 and the terminations of it. I placed in my notice and it was confirmed that both my numbers would then move to pre paid, I then noticed that on the 2/01/2016 that I was loaded with data and minutes, confused about this I then contacted my provider(180) to enquire this hence the consultant I spoke said that my contracts were moved to a monthly rolling contract and was still active. I find this VERY upsetting as this was resolved at the store however I now find out that I am still going to be charged my monthly fee which is now more than DOUBLED!!! Was forced to go the store on the 11/01/2016 to query this and I was given another reference number and was promised a call from the cancellation department, its now 8 days later and I haven't got a call.