No James, in the Middle East you are NOT entitled to anything other than the expectation that your food is not going to openly kill you. The type of service in our home countries is an expectation here, yet is hardly what we actually get more than 80% of the time (if lucky).

From the OP's description, it sounds like their managers must have burned their minds before work. Usually if this is NOT the case, at least one or two of the waitresses will have even a polite smile for guests. In this instance, as others have said they may have been very overworked (they do not make overtime salary) and it is the Eid time (usually a contractually recognized Qatari holiday) for which they are working and probably will not see a compensation off day for.

Then there are the many instances like Sajid said, it could be salary or just working over 12 hours and no salary increases...