debit order change

good day i sent an email on the 2016-01-18, for the debit order to be change from my boyfriends account to my account, i had sent all the relevant documents but no respond and action has been taken <br> <br> the email was sent to [Email Removed]<br> <br> please action asap<br> <br> call me on *** or ***<br> <br> i need to change the debit order date and debit order account details