773 area code is Chicago, Illinois.  If you can determine which prision,
and report to the prison, they will disallow inmate "Maria" use of telephone privileges.  The phone sections and telephone numbers will be mapped at the prison.

I kept getting calls from a inmate in prison. From a Maria. The recording was in Spanish and they wanted me to press a number. I hanged up the phone. But they kept calling back. 5AM-6AM using different numbers.  773-890-9407, 773-890-9400, 773-890-9844, 773-847-9880, 773-890-9760, 773-890-9769. It is probably a scam so you pay for their calls on your phone bill. Beware!

Said "prison" on the phone.  Cook County prison scam that the worthless piece of craps are doing nothing to stop the inmate phone abuse.

County said to call 800-633-1903, but the recording said since they had no record of a call from any prisons they won't block it.  WTF?