In case we haven't gone over this before (and we have, if you read the archives):
It is not appropriate to do the following:
- Send a query letter to an agent, at some unspecified point of time.
- Wait some amount of time. (presumably)
- Call the agent during dinnertime and say the following sentence, in an obnoxious tone of voice, "I sent you a letter and I didn't know what to do next, so I called you. Do you want my book?"
Additionally, in this day and age, it is NEVER appropriate to call an agent to pitch them a query for an unpublished novel over the phone. Unless you're Stephen King. And Stephen King knows better than that.