The public has reported a major increase in the number of scam calls being received across Donegal today.
The calls appear to come from both mobile and Irish landline numbers.
Some relate to non-payment of tax while others claim to be from courier companies.
Gardai have warned people to immediately hang up on these crank calls and do not engage with them in any way.
Some of the numbers being used include 00353236798218 and 087 4767018.