extra charges for poor service

Received an email from adt informing me that they will now start charging more for callouts after the fifth callout per month, so literally my R300 armed response subscription covers first five callouts and then extra charges after that. This is not even in the contract that I signed with them, over and above that I had all my copper pipes ****** from my property about three weeks back and had a recent increase in alarm activations at the property which is empty, adt supposed callouts yielded no results as they come have a look outside the property and then leave while the ******* were busy operating. Maybe if they actually catch the ******* then there won't be excessive alarm activations, will adt refund my monthly subscription if there are no callouts in the month?