People who only call when they need something eventually teach you what the relationship is for.

Patterns of contact tell you what a relationship is organized around. If the calls arrive only when something is needed, that is the shape, regardless of the warmth in them. It does not have to mean the person is bad, and it does mean you can stop expecting something the relationship has never delivered. Believing the pattern saves years.

Look at your last several exchanges with someone and note what prompted each one. If they were all requests, adjust what you invest rather than confronting anyone. Matching your effort to the actual shape usually removes the resentment.