Been called by this number multiple times. They leave no message and when I picked up one time, they asked for a guy. Told them this was not their number, they asked if I was their wife, to which I told them "No, you have the wrong number" and the lady said she'd "call back" when she could speak to him and hung up.

I think this number is related to 972-426-7262 because I refused a call from the 528 number earlier, but received a call a few hours later from the 426 one and it was the same woman on the line from before.

I think you are right about it being related to 9725287629. I started getting calls from both these numbers three days ago. They don't say anything when I answer.

Have been called multiple times by this number.  The first time I answered, they said they were from "the company" (forget the business name they used) that handles warranties for my car (they knew my car make and model), I confirmed they had the correct car but then wanted me to give them the total amount of mileage on my car.  I told them I did not know off the top of my head (which I didn't), and they sent me through to someone else, who started to introduce himself and go throught he same statement.  When I told them I didn't know the amount of mileage, they hung up on me.
Fast forward a few weeks, they call me again.  I was angry, so I told them I still do not know the mileage and if they wanted that information they can call the dealership as they have all that information on file.  Then they said "ok, good bye", to which makes me think this is a scam.  Haven't been able to tie this number to any company via phone book or internet search.  Beware!

You're on to something there -- I got calls within 24 hours from both the 528 and 426 numbers. Tag-team telemarketing!

I did tell them my mileage and they transferred me but it hung up.  So they have my name, phone number, and milage. Should I be worried or is this just telemarketing?