Call centre cannot answer queries adequately

I am very frustrated after speaking to 2 of your call centre operators. Both of them seemed incredibly confused and they were unable to adequately answer my queries. I as left feeling more frustrated than ever. My 2 year contract is coming to an end. I was informed by a Telkom store that I need to call in to the call centre and give a months notice that I don't want to continue further with the contract after the 2 years are complete. I also want to know on what day the service will be cancelled and I also wanted to know if I cancel in time with no penalties, what will my remaining debits be and when. The call centre operators were unable to assist me with this. they were very confused it seems. Please can somebody contact me with the information I require. I don't want this contract to continue past 2 years and I don't want to incur any penalties. Thank you.