“..but I tried calling more than once…but the Rov never called back even once”
Most Rabbonim today are far busier than their predecessors of time past. They do not have the time for playing telephone tag, unless you are someone that the Rav knows or are a regular mispallel in his shul. You will have to keep trying to reach him on the telephone or better yet, go to where the Rav davens and speak to him personally. The main point here is, as I stated earlier, you should have a Rav all the time, not just when you need him.