UNCAPPED LTE - NO FEEDBACK

I have been attempting to apply for the uncapped LTE promotions since 17 March 2016. After applying on-line, I have personally followed up on the matter on three occasions. During my second call I was informed that my application was successfully approved and that a notification would be sent to me by no later than 29 March 2016. Nothing has however happened since and has my debit order not gone off either, please help me with this as I have to cancel other service provider agreements and am I dependent on this. Thank you, I look forward to your assistance.