Woolworths refused a letter to purchase on my card.

My wife who is sick, and with covid is not allowed to shop and asked her sister to buy some things for her on her card.My wife gave a signed letter with both id's for verification and signed the letter. They refused. My wife spoke to a manager Tulani at Greenstone who refused and said against co policy.She then phoned Omit at head office and was told the same but was told that its up to the branch discretion. So if a person is sick and needs to buy how do that buy at woolworths. We know that there is ***** but 2 id numbers and a card to check up on c'mon Woolies.