Shop Fair Supermarkets complaint: Tax Exempt document not honored

I am the Founder for a non-profit tax exempt charitable organization and went to shop today for 2 barrels for shipping. I presented the organization tax exempt document and the Manager, Cindy refused to honor the document and told me that I have to pay the tax. She told me that I have to get a more recent document that is dated 2023. Meanwhile, this is a valid and legal document with the State of New York and there is no renewal. I have been shopping at Shop Fair Supermarket for barrels throughout the years and most recently purchased 4 in OctoberNovember 2022 without tax. Cindy was very rude, disrespectful, arrogant and difficult to talk to. She did not want to listen and refused to let me speak to upper management. She told me that her Boss is in Dominion Republic and that she is in charge. Management need to ensure that their employees have proper training on customer service and to be acquainted with these types of forms (ST-119). I shopped at other stores such as Costco,,Home Depot, BJ’s, Jetro and Key Food etc without any problem and any humiliation. As a Clergy, I always gave respect, and would also like to be treated with respect. I left the store without purchasing the barrels. We are serving the Community and the poor in foreign countries by shipping used clothing and food stuff on a regular basis. Unfortunately, this is the first time I had to deal with such a rude person. Most of the employees are fairly good.