I have not taken the time to read the other responses, so I will try to be succinct, and hopefully, not too repetitive.
To answer your exact question...it IS standard for most agents, who are on top of things, to seek feedback. It is also, unfortunately, all too common for other agents not to return those calls. I find that rude, but it does happen. I understand we are all busy doing what we do...but I personally always make time to give that feedback, as I hope the same courtesy will be extended to me.
I have tried emailing, informally, for feedback......and also tried a paid email program that asks a limited number of multiple choice questions. I loved the fact that the program would, if no response was received, automatically send out 3 requests, after which they sent an email to me and to the seller stating that that particular agent was unresponsive. When I started letting agents know that their names would be shared with the seller for non-compliance,. I started getting a better response ....for a short period of time, anyway.
I am now back to calling ......and I keep calling, but it can be time consuming and annoying to have to do so.
The obvious resopinse or feedback, is that no response means no interest....but, I always like to know why.........as do my sellers.
The best anyone can do is keep trying.................I am sure your agent is trying...............of course, the best response is a call from the buyer's agent, that day, right after the showing to say the buyers are interested!!
Good luck ...and I hope you find a buyer soon.
Prudential NJ Properties
Web Reference: http://www.DebbieRoseSells.com