Lot of Travel Agencies in Qatar are closed due to financial problem. Be sure to deal with pioneer Travel Agencies who served over decades in Qatar. I knew this company they have representatives standing in a small table in most supermarket & malls offering packages, they will take your telephone number and keep calling you until you will take their one of their packages and they may offer you for so many options.
You have to report to Qatar Chamber of commerce regarding their whereabouts, may be they can help you.