wouldn't answer the call and they refuse to leave a voicemail

This number showed up on my caller ID and they said they are representing Wal-Mart on customer appreciation month. They offered a $500.00 voucher and a 3 day 2 night stay at Ramada Inn. They said we could pick this up at their home office in Arkansas, or can be mailed with a one time charge of $6.00 to a major credit card. We called our local Wal-Mart and notified them, they said they have no idea of this. Everyone be aware, the caller's name claimed to be Sasha. They would not leave a contact name or number.

Caller claimed to be from Home Accents and wanted me to verify my personal info so that I could recieve a free subscription.

Received a call at home trying to say I have to go to court for some money I supposably got from an online payday loan company that I didnt know and they wouldnt give me the name of it.

guy in a foreign voice.  barely speaking english very well.  sound european.  telling me i need to call an attorney back.  asking for my name and ss#.  called repeatedly for about 10 minutes.