Tough Time Nailing Down Tax Delinquent List

[Account Closed]

Ok so for my target market (Wichita Falls, TX)  I have already bought and mailing out to the following lists.

1. Absentee Owners-60%-100% Equity, Last Market Sales Date: 10 yrs or older

2. 100% Equity Owner Occupied- Last Market Sales Date: 10 or 20 yrs ( I forgot which one I selected)

3. Receive and market to Quarterly Inherited Lists from USLEADLIST.

I have contacted my local county tax office try and obtain the delinquent tax list but have had ZERO success. They have told me they will not release that information. I bought Rebogateway thinking that would have it but it does not. ( Side-Note its ok because I will use it for other things). 

Are there any online software or lists that will for sure pull these tax delinquent properties for my county ( which is pretty small) or any ideas of what to do to get them from the county directly???

Any and all help is appreciated.

Thanks

Robert