I would like to cancel my app

I called in on the 27 Oct 2015 to apply for a Huawei Tablet that costs r89 p/m....it took a week to have the application pre-approved and another 3 days for the debit order to go off...to date I have not received a tracking number and everytime I call no 1 can say when the device will be delivered or when the tracking device will be sent....I call every week to find out....further more I have to wait for an available consultant for over 20 minutes....all I am saying is if they cannot deliver can they reverse my money and cancel the contract because this is ******** really...