Do better

After increasing my insurance premium without notifying me prior,it is now a hassle to get that said difference back. When I called their client services I was assured that the premium would decrease once I proved I had a tracking device which I did and that my premium would go back to the agreed amount. That was not the case as they continued to debit me the premium I did not agree on,now trying to get the money back one has to jump through hoops to be assisted,I have not received any payment as agreed upon and it has been over 3 months now.