Christina,
What you say is very true of JW's, and other people too. I am however intrigued as to why you seem to go for physical help. Members of a group may be leery of newly interested people when they take for granted the expectation of physical help from the group.
JW's my not want to do much for you, but why would you expect others to do something for you? You may have very real needs, but understand that people grow wary if the expectation of help is taken for granted. I would.
JW's are quite similar to other groups. Some are naturally generous and compassionate, but others are selfish and unwilling to help. You may be calling the wrong people.