Koushik, your work is indeed noble and voluntary. However, kindly note that posting such random messages usually account as Spam and also as disturbing to some people since most of them get offended with such unnecessary posting/s.
Most of the admins, if not all are usually active at some time of the day and they do take care to refresh the PNR's and also stamp them as per their own convenience and leisure.
The issue has been reported to Moderator Sir. I would request you to kindly refrain from such posting/s unless and until a clear direction comes from the Moderator Sir.
Thanks for understanding.