Lyca

Received a call 0923117566924 from man (pakistani/indian) claiming to be from lyca, saying I had won £50,000 an to call Barclays bank manager RAJ on 00923137149132 to claim the money. This was an obvious Scam so I checked on line and there were numerous posts all targeting Lyca customers. How did they get the list of Lyca customer mobile numbers.