New my difference app not working

Since Woolworths changed their loyalty app and introduced my difference I have been battling for months to access and get my loyalty offers, I have spent hours on the phone with multiple people and been in-store at least 5 times with the same story, my profile will be linked with my store card and credit card to enable me to access the app. Another 10 days has passed and still no response or feedback. This is shocking service and I didn't expect this from Woolworths. I want this rectified within 72 hours.