A vehicle storage facility (VSF) licensed by the Texas Department of Licensing & Regulations cannot refuse to release a vehicle after payment has been made. VSFs around Texas are demanding vehicle owner sign their company documents before releasing the vehicle, some going as far as keeping the money and the vehicle until their extortion demand is met.
The only document that is required to be signed at the vehicle storage facility by the vehicle owner, operator or lien holder is the TDLR Form No. VSF011 and it must be notarized.
Under no circumstance should you sign any document regardless what the vehicle storage facility or towing company says.
If they refuse to release your vehicle unless you sign something, call 911, get the offense report number and file a complaint against the vehicle storage facility with TDLR, they will be fined for this behavior.
As I suggest on Texas Towing Compliance, you always want to audio/video record all conversations while at the vehicle storage facility, because some storage facility employees become irate, hostile and will threaten you when demanding to see their vehicle storage facility employee license card, or ask for the name of the person who authorized the tow.
If you encounter a vehicle storage facility employee or tow truck driver who displays an expired license or refuses to display this license, don't hesitate, call 911.