Cancellation notice

So apparently you have to give 30 days notice when your contract is about to expire for cancellation so that the contract isn't just automagically renewed! How the hell are we meant to do that if your "Helpdesk" never EVER answers the phone. It either drops after waiting for 10min or you get to a voice msg system (Which they never call you back anyway) or to a msg that says the mail box is full. So I started irritating the "New Sales" department because they actually answer the phones in less than 2 min. Funny how Glocell works, they so keen to get new business but not to support it. You cant even get through to the billing department. Not to mention if you phone ********** (HQ), the receptionist is disgustingly rude and just puts you through to ********** anyway! I have been emailing Glocell since Dec about my cancellation with not a single response. If my contract doesn't get cancelled at the end of Feb I will get a lawyer involved. I don't care how much it costs me! How is this company even allowed to do business with public... HOW!!!! Disgusting