Abbas I am noticing at many points that you sometimes post comments twice, sometimes waves and even you have mentioned that you posted twice.
That isn't a good thing. You must use hive when the network is strong and stable. Also try to not hustle clicking the submit/publish button, this might also be the cause of your double posting at times.
I already got that point and I consider this as my mistake, might be network error or possibly I hit two times on Reply/Publish button, thanks for mentioning by the way, I definitely will take care of it next time