Merseybelle2 is correct; the TPS are useless as most of these calls come from abroad although they look as if they have a UK number.
Unfortunately, once we are 'on the books' of a scammer, we are sold on to others, so the calls are likely to increase. Just ensure that you know there is nothing the matter with your internet/bank account or credit card. Additionally, you have not been left a fortune in Nigeria!
We think we are fairly astute but were almost... taken in by a caller, 'Detective Xyz, calling from Xyz police station' advising I had left my debit card in a cash withdrawal machine. He had my name, telephone number and the branch he mentioned was close to where I had been shopping. It was only when he asked for the card number and my husband said 'but you have the card, therefore you have the number' that there was a click and the chap disappeared and crawled back under his stone.
I think that people of our age are soft targets as we respect authority and if a policeman asks for information, it is only polite to give it to him! Just remember, these people are not real policemen. Don't be taken in.