Voucher number to be redeemed

I purchased a voucher on January It only came to my attention when I made an enquiry that I should have used the the number that I used to register my Money Market profile. ( I haven't used money market in years) I then proceeded to ask for a number change as advised. Do I really need to wait it's now day 5 and that voucher was needed urgently. I called shoprite several times to check if my voucher number has been processed but to this day I haven't received any feedback.