HORRIFIC CUSTOMER SERVICE!!!

I Called your cancellations department last week and was told I will receive an sms to confirm my request to cancel, I have not received any sms.I tried to call your call centre yesterday was on hold for very long and the call just disconnected.I send a facebook request for a call back but no call back.I tried to call your call centre 3 times today and every time an agent answers the call gets disconnected! Not one of them called me back! this is beyond pathetic and one of the main reasons I am cancelling my contract.Your company has absolutely no sense of customer service! I have never ever experienced such horrific service in my life!