This anon strongly discourages the use of any “excuse” such as medical, religious, discomfort. In many ways that only feeds further into the madness. I just tell them in a loud full throated voice, I will not be doing anything like that and ask if they want me to take my money elsewhere.
First it has the best chance of boosting the confidence of anyone at the store who’s thought or voice doubts to friends or coworkers… and second makes it best known not to try mamby pamby persuasions nor any type of intimidation upon me. Offering to take my money elsewhere is their best out if they are scared while still letting them know THEY are the ones losing out on the whole deal going along with the ScamDemic.