The bank had, however, sent out letters to customers explaining that if anyone had questions about the move they could ring a customer relations number and had put a large sign up in the window advising of the planned closure.
Another woman, who said she did the banking there for her elderly mother, said the decision "sucks".
"It's typical - they don't really look after the customers."
She said on occasions her 86-year-old mum would "have an outing" and walk to the bank from her home nearby to do her banking business.
"But that's not going to happen any more."
Another customer, who gave his name as Paul, said it was "sadly a sign of the times".
"It's like the postal services - they're getting cut back and people just aren't using banks any more - it's all hole in the wall or online stuff."
He said his elderly neighbour who had used the bank since it opened about 30 years ago would head there using her walker to get their banking done.
"And she relies on people to help her with that so I don't know how she's going to get on."
Long-time customer Robyn Dorday described the closure as a disaster.
"That bank is used by a lot of people," she said.
"There is such an aged community here and they like to go and get their cash out on pension day."
She said having worked in the city she had seen the queues at busy times and the problems in trying to find parks.
"I got quite a shock when I heard it was closing - I don't think we should let it go".
In the letter to customers ANZ Regional Manager Retail Deryl Melster thanked them for their continued support and said everything about their present banking would stay the same and staff looked forward to welcoming them to the main Napier branch.
She advised people they could carry out their banking requirements "anywhere anytime" through the bank's 'goMoney scheme, internet banking and phone banking, and people wanting to know more about them could consult with branch staff.
In September last year ANZ announced the closure of its Ngaruawahia branch and was consulting on plans to close six more "low volume" branches.
At that stage Westpac had also closed 19 smaller branches around the country.
In a statement an ANZ spokesperson said the merging of the Marewa branch and the main branch came a time where branches globally were seeing less foot traffic and as a result there had been an average 13 per cent drop in customers visiting branches over the past few years.
"With these changes in customer preference it is no longer logical to keep the branch open with the Napier branch about 2 kilometres away."
Marewa customers will still have access to the ATM there for cash access and deposits.
The branch manager had decided to look at other options outside ANZ and other staff would be relocated to other branches in the region.