Some indian woman rang, claiming I won a holiday. Don't remember entering any competitions for a holiday

Caller: Possible scammers.

Keep ringing me over the last two days. The numbers all start with 02 831713 then followed by the numbers 34 as above or 45. I think it is the same scam like organization. I have not answered these calls, also I have not entered any holiday competitions either. Has the strong "smell" of SCAMMER(S). Best to BLOCK or BLACKLIST.

I called back number (02) 8317 1334 rang once then gets disconnected automatically.