A response I received from another tax pro on a different forum stated that when he asked if the IRS agent would call him back if disconnected he was told they are not allowed to.

What a horrible way to do business. This forces the tax pro to call again, go through the wait to get an agent, go through the entire problem again and hope he doesn't get hung up on again.

I'm wondering, has anyone gone through the Taxpayer Advocate Office via phone call or Form 911? If so, what was your experience like?