Cancellation of contract

Their level of incompetence is frustrating, I called in a month ago to cancel my month to month contract, the guy told me it will be cancelled, I got charged for July in any case, I call in,unfortunately after hours, and the consultant tells me it was never done. So I try to during office hours and someone picks up the call,says nothing and ends the call, furthermore I have been trying to get hold of cancellations and no luck. Customer service is pathetic all round, whether they answer the phone or not, do not know how to take instructions in the first place, consultants lie, clearly these are the values this company exercises looking at the same reviews on this platform.