If you are sponsoring the housemaid legally, you have options.

The husband is not to return to the house.

When her contract expires, cancel her visa and send her home. Do not let on you will be taking this course of action. BOTH of them are taking advantage of you.

BTW how do you know he is indeed her husband? Have you seen an attested marriage certificate and national ID? You could face serious problems if they are not married and carrying on under YOUR roof.

If you are NOT sponsoring her - you've got even bigger problems. Get rid of the pair of them ASAP. The fines for illegally employing a maid without providing sponsorship are very high.