Are u sure that the work hours is only from 7am to 1pm?
office hours 7am till 1 pm only
electronic PO BOX open till 10pm
for more info call 4464000
QATAR GENERAL POST OFFICE WEST BAY
SUNDAY THROUGH THURSDAY- 7 AM- 8 PM
FRIDAY CLOSE (Electronic PO BOX open 9 am to 7 pm)
SATAURDAY from 8am to 11 am and 5 pm to 8pm
The one is rayan area is open till 9pm minus Fridays
I would suggest checking on their site, look for the appropiate branch and...voila!!...there you have the information.
Just follow the link!!