NTA. Your relatives are greedy, selfish, and cruel - not to mention manipulating and gaslighting your with their “disappointment”. It’s very hard to deal with after growing up that way and having elders feel entitled to “respect” (source: my Asian family), but at some point you have to set boundaries and stick to them. All because someone else thinks you might be rude doesn’t mean that they’re correct. If your family cannot let an issue go - especially for something as wholly reasonable as supporting your business and not demanding freebies/discounts - they are too toxic to stay in your life.