Still billed after 4 months of cancellation!

In the beginning of April 2017 I requested my Getmore subscription to be cancelled in which case I was informed that I have to wait for 30 days and then I will be called back for the cancellation (ridiculous! but I waited) I was called back mid May (after more than 30 days) and was informed my Getmore subscription has been successfully cancelled. May and June I was billed for the Getmore subscription, which I understood as the subscription was only cancelled mid May. Now July, August and September I am still billed! What am I supposed to do to actually get this subscription off??? I have called numerous times and all the time I am told they are escalating the query to the supervisor, since I am enough of the same old saying today I requested to speak to that so called supervisor since he doesn't seem to be doing his job and I was told he is on lunch... Soo with such a huge telecommunications company, you all are relying on one supervisor to actually help the millions of customers!!! That's just outrageous! I want this Getmore subscription cancelled immediately and I would like the refund for all those months that I was not supposed to be billed. Why is it that when you selling people staff you are the nicest people ever and yet when it comes to such that you have to cancel a subscription you don't care??