I received a call asking if I was the wife of my father which they didn't know was my father. A man named "Rick" wanted to speak to him because of a "important business matter" and gave me a number. Upon calling it, T-Mobile wanted to collect a 900 dollar debt. We don't owe T-Mobile a dime and aren't even using T-Mobie as our service provider. You might want to pick it up, but from what our experiences were like, I wouldn't.