Cancelled Line 3 months ago & still getting billed

I cancelled my line with Neotel in Oct, giving the required 20 days notice.<br> <br> They didn't cancel my line & continued to charge me. I sent another cancellation in Nov, Dec & Jan.<br> <br> Despite all of these cancellation notices, they still continue to charge me (even though they've removed all their equipment).<br> <br> They also refuse to refund for two weeks of no service when their towers weren't working.<br> <br> Shocked at the pathetic customer service, and ********** billing practices!<br>