Ok this number is a SCAMM, They are trying to fish information from you to access your banking information. They will first obtain your email address, that they purchase from a reseller. They will then send you a THREAT in the email, stating they will have you jailed if dont call them asap. The number is actually a T-Mobile number setup on a switch account. They will use the number for a period of time and then switch the number out. BEWARE.