Beware of the illegal placement agency procuring hefty amounts of fees in the garb of arranging domestic helpers. Be sure to source them from a reliable place. The helpers might be a good option. See them here: https://www.helperchoice.com
Just to give you an even break up of things. A western nanny could cost you more per hour wise while a native working helper could be a more feasible option for you. Do make sure they are professionally trained. Hope you find what you are looking for.