In my opinion, I don't think this will happen with anyone and the God... But however, with other Deities yes. It depends on the Deity and the individual. If the worshiping is with the only purpose to gain things instead of showing your love through these actions, some Deities may not appreciate that fact; the feeling of them don't want to help people could be stronger if the person is hypocritical, which means they pretend to love the Deity.
From the other hand, if a person and a Deity have a close bond, then again it depends on the Deity. The Deity will help the person...but maybe not in every material thing particularly they have. It depends on Deity's peronality... Although yes, I believe every person who is a devoted of a Deity in a case which a bond exists between them, the Deity will always be willing to assist in spiritual journey and help...