I was misled into signing what I was told was a SIM/internet deal

I was misled into signing what I was told was a SIM/internet deal. I am now being charged for a home maintenance plan which I never requested. I do not own a home, making this service completely irrelevant. This is clear misrepresentation and deceptive sales tactics. I have requested cancellation and a refund but have not been assisted. I will be escalating this matter further if not resolved urgently.