Expensive glitch with rune

This situation has occured MANY MANY MANY times and is getting vey very costly....

It would seem that when i get the rune screen....play auto pray or normal pray.....get the 60k choice (old man face)....
INSTANTLY AND CONSISTANTLY.....did not syncronize with server....
once i log back in....what was once 400,000+, 200,000+ no matter the amount remaining.......POOOF GONE...if the old guy gave me great a rune its gone too...im left with a avg 20,000 coins and a complete waste of time and efforts.

this event is less likely to happen if the rune given to me by the old guy is a low level common rune...but if its decent ...you can bet, i'll not synchronize and i'll come back broke and screwed

THIS IS ALWAYS HAPPENING AND ITS COST ME A TON...HELLLPPPPP

How to GLICH THEM NOT TELL WHT HAPPENED......!!!!!!!!!!