Burger King complaint: Non service

We have been to this Burger King SEVERAL times. Today when my husband was there, they had a sign on the door that said inside dining was closed because of lack of employees due to COVID. He is disabled (amputated at the hip) and proceeded to walk around, walking with crutches through the drive through. They wouldn’t come through on the intercom so he proceeded to the window to order. When he got to the window, they refused to take his order and said they wouldn’t take orders from people “walking” up to the window. EXCUSE ME?!?!?!? We have ordered several times like this at “McDonalds”. Never have we been treated like this at their store!!! And I’m sorry to say that our business at Burger King will probably end after this treatment. I know this probably doesn’t make any difference to you but word will travel fast after this kind of treatment!!! Thanks for treating my “disabled’ husband with so much respect. I’m very very disappointed with this store!!!!!