I missed the bit of where the call came from but they said i had two charges made on my credit card and did I want authorise them or did I did not authorised them. Since I didn't make any purchases I pushed button for not authorised. Having said that, I don't actually have a credit card and there wasn't enough money in my account for any charges to be made. So nothing should be happening, but it's still a worry. I called the number but it was switched of or unavailable, so it wasn't my bank.