Cell C awful contract experience

Over the course of a week, my wife and I attempted to sign up for a Samsung tablet on contract with Cell C. We called numerous times over the course of a week, confirmed information and approved the debit order only for the courier company to inform us that the address and name on the delivery consignment was incorrect. My wife contacted Cell C to correct the details and the agent informed her that redelivery would be attempted either on Friday or Saturday. She decided to call Cell C this morning to confirm delivery only to be informed that her previously established contract had been cancelled (with the debit order still active), and that we would have to begin the process again, even though the error was theirs to begin with. This is extremely frustrating, as the tablet was intended to be a Christmas gift for our daughter. Absolutely awful customer service with zero interest in rectifying their mistake.