MTN-Bad service and tariff increase on fixed contr

My contract expires on 26/10/2015. Tried phone calls, e-mails etc to give notice of cancellation, well in advance(30days). Just getting Ref nr and then informed account in arrears as they had price increase March'15. How can fixed contract be affected by this. Still no answer. Just forwarded to different departments the whole time.<br> This is the just some of the reasons why I will NEVER EVER renew my contract or advise this service provider to anyone. All I ask is for somebody to contact me in order to try and resolve my issues and acknowledge cancellation of my contract. Unable to get hold of anybody by phone. So tired of just getting 'Escallation\ notices to different dept