Talktalk customers, please be aware of cold callers claiming to be Talktalk support employees.
Typically they will tell you that your Router needs to be replaced due a weakness allowing hackers to access it. They will offer you a £200 refund for the poor service you are receiving and then ask for your Bank account details to enable them to credit your account.
Do not allow them to access your computer as they will activate the ‘Syskey’ which will prevent you from accessing your computer if, they are unable to draw money from your Bank account.
Talktalk should email all of their customers to make them aware of this scam but, for some reason they have hidden details of the scam in one of their web pages only.