Police have urged broadband customers to be alert to a scam which sees swindlers gain access to bank accounts.
Talk Talk suffered a major data breach last year when fraudsters stole account numbers, names and phone numbers of customers.
Conmen are calling some Talk Talk clients and using the data to gain their trust – before getting access to their computers and raiding their bank accounts.
One victim, from Prestwich, hit out at Talk Talk over the on-going scam – which the company first acknowledged in a statement in February this year.
The man, who asked to be referred to only as Adam, described how a fraudster gained access to his computer and online banking earlier this week after calling with his account number and saying there was a problem with his router.
Adam said: “This woman had my customer account number so I thought it must be genuine. She said the problem was Talk Talk’s fault so I was entitled to a refund.
“She advised me to log into my online banking while she was still on the phone – which I stupidly did – then the screen started going blank and flickering and money started disappearing from my account.”
Adam, who is set to reclaim the £60 taken from his account from his bank, said he became aware of the con after searching on the internet.
He criticised Talk Talk for not changing customers’ account numbers when they first became aware of the scam.
He added: “I’m angry they haven’t had the decency and integrity to take action.
“I had no idea my data had been compromised. They have still not cleaned up this mess. They have washed their hands of it. It’s disgusting.”
A Talk Talk spokesman said: “Earlier this year, we became aware that some customer data had been accessed illegally, and that this was being used to target customers directly in phone scams.
“No sensitive information, like bank account details, was accessed, but we know that a small number of customers are still being contacted by these scammers.
“We urge all our customers to be vigilant, as criminals are increasingly trying to defraud consumers in this way.
“We take our customers’ security seriously, and we have already contacted our entire base on two separate occasions to tell them what had happened and let them know how they can protect themselves.
“We have warnings on our website, as well as a dedicated online help area.”
Greater Manchester Police officers have also issued a warning.
A spokesman said: “Beware of the Talk Talk scam. Unknown persons are phoning claiming to be from Talk Talk.
“You get a call and you are told you have a computer or internet fault. It’s rubbish, they’re after your cash.”
“Don’t give access to your computer or make any payment.”