Disgusting treatment of patron by owners

I was in the Douglasdale Wimpy about 2 weeks ago and witnessed awful treatment of a patron by the 2 owners. A lady was sitting with 2 people and it looked like they were having a business meeting. I was there for about an hour with my children having some lunch and they were there for all of that time so I'm not sure how long they had been there for. When the lady went to pay at the counter, the male owner started speaking very loudly and telling the lady that she couldn't sit in his restaurant for so long and order only coffee. The lady offered to order a meal to takeaway and the owner said that she shouldn't bother and that she must never come in to his restaurant ever again!!! Then his wife came over and started shouting at this lady who looked dumbstruck as did all of the other patrons in the restaurant who could hear every word as the 2 owners were practically screaming at this lady. I used to go into this Wimpy often but I will never ever go there again and I have told all of my friends never to go again either. I am left absolutely horrified and disgusted by these 2 people who are representatives of Wimpy.