Horrible call Centre experience

<p>I recently tried to call the call center to cancel my contract, they said they needed manager approval and would get back to me within 24hours. It has been 3 weeks and I have had another months subscription deducted off my account. To add to this whenever I call through to the call cente I get the same lame message saying they are experiencing high call volumes (more like they are avoiding my call as they have caller id) and I have waited no less than 5 minutes for an answer (most recently 13 minutes before I gave up and hung up). </p>