Just check BTU of your AC.
12000 BTU = 1 Ton
Following are the major consumption
Water Heater / Geyser = 2 kW/Hour
Electical Ovan = 2 kW/Hour
Microwave = 2 kW / hour
Fridge / lights are nominal
I agree, the bill is on higher side but it all depends on use of appliances.
If you open your house door freqently, heat may leak inside, the AC will be loaded more which will also increase power bill.
You may ask Kahramaa to calibrate the meter also.