I called back number (02) 8416 8064 rang once then goes to busy tone.

Rang and busy tone

Caller: Wyndham travel

Calling to offer a special travel package after getting details from a Facebook competition. Multiple calls over multiple days, never leave a message just trying to sell you travel.

Called our business number, I answered and they hung up straight away.

Caller: Wyndham destinations

Holiday scam

Answered, nobody there. Why do they do this?

Scam

Caller: Wyndham

Told me that my phone number has been selected to received a fantastic holiday... I told him that I am at work and hung up!

Seemed to know my first name. Hung up on me after about 5 seconds of connecting. If you try to call them it goes straight to the engaged tone.