Question

what do you call a person who is helpful but when someone insist that they don't have to do that for them, they just be like "oh shut up and just let me do it for you"

Answer 1

A person who displays that kind of helpfulness might be described as "pushy" or "insistent" in their kindness. They could also be seen as "overbearing" in their desire to help, or perhaps "dedicated" to helping, depending on the context. Alternatively, they might just have a strong personality that drives them to assist others, even if that help is not always requested. It can be a blend of assertiveness and a sincere desire to be helpful.