Who called from 7202964800

Automated, text to voice generated message, claiming that they will (literally translated) "... File lawsuit against you. We need you or your retained attorney of record to return the call the issue at hand is extremely time sensitive. Please call us immediately on 720-296-4800. I repeat 720-296-4800. Thank you."

Called said i owed 8000 and wanted to know how much money i have in bank and to give credit card number

IGNORE!!   The IRS mails letters if there is a problem.

Received the call and they left no message.  Will permanently block this numer.

yet another automated voice saying they've been trying to contact me and there suing me and I need to call them asap