Vox cancelation process a ****!

I sent through the request for cancelation and my request was received. I clearly stated i needed to move out of the house hence the need to cancel with month end of February. When I sent through my cancelation I was not informed that the cancelation is of the 1st April which I only learned when I called on the 11 March. When I explained my situation the lady whom I was talking to transferred me to the account manager who promised to action my request and gave me a positive feedback that the account will be canceled within 3 working days. To my surprise when I called today I was told there was no such request logged on the system. What kind of a company who treat customers like this? Why did the person promised me that they are attending to my request when they knew that they are not going to assist. Every time I interact with Vox I am always disappointed with their service, why should one get assistance through this platform everytime! We are only customers when we are paying, but when you need to be given service you are treated like a person who cannot think!