MY HALO 5 IS ASKING FOR PAYMENT AFTER UNINSTALLED

I need a code for halo 5 sent via email to benw1516@outlook.com as when I uninstalled the game it is asking for another payment, now ive already spoke to xbox support regarding the matter and the best they could do was offer a refund but im in the minus on my bank account so they suggested this as an alternative, please help!!