bad customer service

I bought a laptop at Game store in august and I took out insurance my premium is R130 per month, but for the past two months they have been debiting MORE then the amount I don't understand why I have been calling but no one is assisting me I keep being put on hold. I then decided to go to the retail store the Lady by the name of Gugu who is the insurance lady called the call center and again I was put on hold for 40min this time then eventually they hung up on me with no explanation this is really frustrating I am aggravated by the bad service I am receiving from hollard I want an explanation, and for the extra money that has been taken to be credited back into my account and to cancel my contract.