horrific

I called mi way on the 16th of September 2015,to change details on my policy.I was quoted a certain amount,then I told Precious that I have a tracking device on my vehicle,she entered those details down,THE PREMIUM THEN INCREASED,which made no sense at all,I asked her how is it possible that my PREMIUM INCREASED,she said she would call me back,but didn't,on Thursday the 17th I called the call centre again to speak to her but she was unavailable so I spoke to Gloria.she couldn't assist me and she said she would get Precious to call me back,but nobody called me back,and this morning Mi way debited the difference from my account,WHO THE F*** gave them permission because I was still querying the PREMIUM INCREASE..I'm angry and I want answers.