Upgraded all my contracts without permission! Very very shady!!

Upgraded without permission for months Have been billed and paying for contracts I didn’t consent! To how many customers is this done to? I am so upset and have lodged a query to reverse this, revise my statement and resend it for the past 4 months. Please check what you are paying for and make sure it’s correct. This is so shady and they trying to push sales through unauthorized transactions.