Who called from 2672703133

I keep getting calls from this number every so often. They never leave a message. I am behind on my student loans and a charge card, so I keep assuming they are some kind of collection agency. The best info I have been able to find on-line says the phone number belongs to Omnipoint Enterprises (whatever that is) out of King of Prussia Pa.

I've also have various missed calls from this number and they leave a message but don't say anything. I have student loans I'm behind on too.

They called my mother, whom I don't live with, and said they had a job to offer me. They lied, which is a violation of the FDCPA