Can’t Redeem Voucher

I have a voucher that I’m unable to redeem online and at the store. The store has called the Woolworths head office for assistance the whole of last week from 25 November 2021 until to date and no one picks up or if Woolworths Head Office picks up ,Woolworths Head Office puts the sales lady from Woolworths branch on hold forever then Woolworths Head Office drops the call.