How would you handle the following situation.

You call up NY Approach, VFR, and say "Request class bravo clearance at
1500 for some sightseeing down the Hudson River". The controller says,
"Cleared into the class bravo as requested".

Sometime later, you realize you havn't heard from them for a while and
upon calling, get no response.

I'm not aware of any FARs that cover this situation. One might try and
apply*the rules in 91.185*(IFR operations: Two-way radio communications
failure), but it's a bad fit for a number of reasons.

What would you do?