united tows llc towed my truck away in parking space without visible signs dallas Texas

 I came to my friends apartment (soloma at hillcrest) for him to change his shirt to go to an event . we were inside for 15 min and when we came out my 07 tundra was missing . when I came in through the entry I saw absolutely no towing signs at all. went to the yard and picked up the truck, came back to the apartment and took pictures of place to have proof there wasn't anything. they ruined my whole night and made me pay when they weren't professional enough to have all signs up .