Bad Service

I have a gap cover with M-sure.What happened was,the dealership that I bought my car at registered me for gap cover with-sure without my knowledge, so as soon as I found I cancelled that policy and few weeks later I called to re instane the policy,so I got a discount and my premium is R83.00.The debit date is every 27th of each month.So July they were supposed to deduct on the 27th however they did not,so now I'm am charged penalties or what so ever.I called in today after I recieved an SMS that says i need to call them urgent as to they never recieved my premium an now is R104.38 ,so the agent I spoke too said the is nothing she can do for me to assist instead I need to pay that amount and she hanged up the line while I requested to speak to the manager.So I'm soo upset because they did not keep their promise...