Can I ask a pub to stop serving a relative?

My farther has a drinking problem and Ive contacted the pub he goes to and told them to stop serving him. The woman on the phone explained that she un

My farther has a drinking problem and I've contacted the pub he goes to and told them to stop serving him. The woman on the phone explained that she understood the situation. However my dad has recently been served. What can I do further to prevent him being served at this pub?

or:My farther has a drinking problem and I've contacted the pub he goes to and told them to stop serving him. The woman on the phone explained that she understood the situation. However my dad has recently been served. What can I do further to prevent him being served at this pub?

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