I've been on the other side where I'm meeting with a provider and we are in the middle of activities when she starts to receive phone calls from another hobbiest. In these situations, the provider has usually respectfully ignored the calls, but there have been times where I have encouraged her to answer. Knowing the reality that I'm not her only date, its quite exciting to have her take the call and attempt to sound normal while communicating. Of course, I try to break her concentration or go harder during the call, but it certainly adds a thrill for me and results in a good laugh between us afterwards!