Premium increase due to change in risk address

I recently moved to Naturena from Alexandra and I called iWyze to change my risk address. iWyze decided to increase my premium with over R50 per month, I cannot accept this as my car is now parked inside a locked gate and inside a locked garage and in Alexandra the car used to park inside a locked gate but in an open space. I expected the premium to go down instead. The lady that was helping me in negotiating the premium told me that they can't give me any more discounts, I must wait for November when they review my premium, chances are in November they will be increasing the premium as they always do every year. I am not happy with this increase. I have been with iWyze for over 3 years and I have been getting cheaper quotes from other insurance companies but I still decided to insure my car with them. I am very disappointed!!!