DYFED-Powys Police is warning Brecon residents about scam phone calls after a dramatic increase of reported calls.
Fraudsters pretending to be from HMRC have been targeting people from the Brecon area in an attempt to gain their personal and financial details.
Callers are told they owe unpaid taxes and are asked to press one when they are transferred to a person who asks for their bank details.
In some cases the criminals have threatened callers with court or police action if they don’t comply.
Paul Callard from the financial crime team said: "HMRC would never target people in this way and would certainly never ask for money or bank details over the phone. HMRC would never use texts to tell you about a tax rebate or penalty or ever ask for a payment in this way.
"Please be vigilant, do not part with any money or personal information. Remember that it is okay not to speak with colder callers - just put the phone down. If you are concerned please contact police on 101."
The scam has also affected people from Milford Haven and Haverfordwest, and there is a chance of it targeting other residents in Powys
The police has offered tips on how to avoid this type of fraud which includes:
1) Telephone numbers and text messages can easily be spoofed;
2) You should never trust the number you see on your telephone display;
3) If you receive a suspicious cold call, end it immediately;
4) Do not enter into conversation with them;
5) and, do not provide them with any personal details or send them any money.
For further advice and information on how to stay safe from scammers, visit the Action Fraud website.