Service charge/tax - Let me clear this up for you. You don't seem to know the difference between service tax and a tip.

Back in India Service Tax is something that the hotel (or any other service provider, 58 in total) pays the government. This cost (8%) is passed on to the customer and appears as "Service Tax" on your bill.

And, yes Qatar is a rip-off. You pay a lot more for a lot less.