Now look:

1) You have been offered a job by one of the best Employer's in this country.

2) In your Home Country, you will never get the increase in salary that you are talking about for next 10 years.

3) You know that the benefits here are unbeatable.

...and still before even getting a Residence Visa in Qatar you have already started Whining and Crying...you already started bashing your prospective employers by saying "tone of interviewees was NOT good"...

You know what....you are among the most suitable Expats to work in Qatar...

Irrespective of all the comments in this thread, I do not think that you have any intentions of rejecting this offer...but your good preparation for complaining is really not worthy!!!

....Welcome Aboard