Another member went thru a similar incident at the dog park @g8erjackie
I would call the county to let them know about this owner, and see if this person can get banned. It's a shame that one person can ruin it for everyone… I don't go to dog parks anymore for this exact reason. Most of the owners are just sitting there talking or looking at their damn cell phones and NOT paying attention to their dogs. Roxie always had a blast here, but Bella (our other bulldog) always attracted the aggressive dogs and there would be drama. She never got bit because me & the hubby were w/her the entire time but I got tired of dealing w/stupid people. PLUS of course people that have these aggressive dogs always want to bring their dogs to play w/other dogs…Unbelievable!!!