Refusal to cancel telephone line

<p>I sent in my cancellation form to their cancellation email address on the 15th of May, to which I received the following automated reply:</p> <p>We hereby acknowledge receipt of your fixed line Consumer Contract and Services Cancellation/Retention Request. A service consultant will contact you within 21 business days to verify the information provided and/or confirm cancellation/retention options available.<br /><br />~26 business days have since passed and I have yet to hear anything from them, except that they have of course billed me again for another month.</p>