I don't know anything about this call

They call my cell 5 to 6 time per day.

Never stops, every day.

Calls and doesn't say anything when I answer, and doesn't leave a message when I don't. Calls at least daily.

This is a collection agency called "United Recovery Services". They are based out of Houston, Texas and they use local call routing to make the call from them appear to be local when in fact they are calling from Texas. Depending on how they spoof the local digits for caller id this may be illegal, but at they very least it is unethical. Then again, since when have collection agencies ever been worried about ethics?

Calls late at night and leaves garbled messages. Called the number back and it belongs to "Jen".

Unsure of caller, randomly called at this time.

This number called me twice within a 10 minute span. I answered one of the times, being it woke me up, and all it did was a beep, beep, beeping sound like a siren or something. Called it back, just rang and rang.