Contract Cancellation

On the 24 - 25th August 2015 I went to a Telkom mobile store in Alberton to cancel my contract on number ***. I filled the cancellation form and the person who was helping me told me he would send the cancellation to a relevant department. Today I call 081180 to check if my contract was cancelled on to be told the number is still active, they say they tried calling me to confirm the cancellation but they couldn't get hold of me. Why didn't they leave a voicemail message to make me aware they called because I cannot be calling back every missed call number on my phone. I cancelled that contract and it needs to be cancelled because I cannot be paying for something I am not using. Look into the matter please because I cannot go back to a store and fill forms again. Whenever you call these Telkom mobile stores no one answers the phone it just ring forever with no answer.