its satuday... try calling on monday after 9. Your email will also probably be replied after then....When Lums was not . Just kidding lums no offence to you (lums). I sent them an inquiry email sometime back and they didnt reply.
If you are in lahore you can visit them, if you just cant be all that satisfied.
Or just keep calling them, they might pick, and at the same time email them too. I would keep calling them all day till they pick.
Keep your docs' CC's with you.