On the other end of the phone was 89-year-old Sybil, a customer of Tamworth's Westpac Bank since at least 1982, when it was still called the Bank of NSW.

Isolated at home to stay safe from COVID-19, Sybil was out of cash and almost out of food.

In a situation most would call going above the call of duty, Ms Bewley just did "her job", picked up the groceries and paid for them herself.

"Sybil didn't have any cash, she doesn't use the Internet or anything like that," she said.

"I just straight away thought I need to help this lady, I told her to tell me what she needed and that I'd be out in an hour, I didn't hesitate.

"When I got there she had tears in her eyes, she was very grateful."

The outbreak of COVID-19 has forced a lot of elderly people into isolation for their own safety, a tough move for some who have spent their lives heading into the bank to deposit and withdraw cash.

Friday's good deed still gives Ms Bewley goosebumps to think about.

"I guess in times of need we need to be there, it's even more important to look after your family and friends and each other," she said.

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"COVID-19 might be an inconvenience but it brings us back to what really matters, which is our family, our friends and our customers.

"It gained a lot of recognition in the town but I didn't do it for that, I'm just doing my job for an elderly lady who genuinely needed a hand."

When her bosses heard about the good deed, Westpac reimbursed Ms Bewley for the groceries.

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