https://wumt.westernunion.com/WUCOMWEB/ ... curePage=Y" onclick="window.open(this.href);return false; (scroll all the way down)
It seems to be a toll-free number (for US residents). For anyone else, I think calling it is in all cases cheaper than losing money to a fraudulent person on the internet!* If you think you've been a victim of fraud, contact us at 1-800-448-1492.
* Forward any suspicious emails to email@example.com.