Mine got cloned and the first I knew was when I discovered I was £850 overdrawn. It turned out to be for a well known and now bankrupt payday loan company. I rang them and they asked for 'my account number' on explaining I didn't knowingly have an account they traced 'me' from the card number. 'Hello Mr Aziz' says the type on the other end. Fail, my name isn't Aziz! They insisted I report this to the police, meanwhile my bank was also asking for a crime number. So I call the local force, sorry service,.... well Rozzers.They sent out a uniformed officer who asked me to recount how I'd discovered the fraud, three times. On the fourth request to recount it, in order that the officer could make notes I challenged him and asked why I needed to go through it again.
It turns out that bad lad No.1 has been known to give bad lad No.2 his card so BL#2 can use it to raise a payday loan then BL#1 reports the fraud and they split the cash so helpfully supplied by the lender.
As even a cursory check on the card would show Mr Aziz was not the account holder Wonga lost out on £850 and deservedly went bust. My money was refunded and I presume my bank retrieved it from Wonga.