I am not certain if you can change your mind however, depends on the content of the contract etc..Typically an employment contract is binding for the benefit of both parties.

You do have the probabtion period, in which either party can say bye bye without notice.

Qrs.25K and two kids. Are they paying school fees? Housing is provided so that is one major monthly expense you do not have to deal with. Schooling is the second major expense.