keyboard layout settings

Hi, I am from India. Last week I purchased  15.6" Dell Latitude 5580 model laptop with QWERTY keyboard from a person in India.

After that I realized that i got keyboard issue with this laptop. Some special charactors not matched with impossed letters of the keyboard. ie, if I press  Shift + number 1 key of top Raw, it will type "!" mark instead of "&". and other keys have the same problem. If i press Shift+ 4 it will come"$" instead of coma . It has seperate key for "%" but it works with Shift+5. But Number keys are perfectly matching with the prints. 

Dell customer care executives said that, there is no complaint in key board, this laptop is manufactured in BELGIUM and the keyboard language setting is in English (India) Mode.

And they changed Keyboard Language to English (Belgium). After that almost all special charactors are matched with prints of key board. but settings have changed to AZERTY keyboard layout. And  if I press M it will type coma. Some other keys also got similar issues.

Please help me to sort out the issue with correct set tings which suits the exact keyboard layout.