Husband left me alone for job.In laws don't treat well. What can i do?

In your situation, you have 2 possible situations and it all depends on what you want.

1. Filing a petition for restitution of conjugal rights under Section 9 of the Hindu Marriage Act. Section 9 has been reproduced below for better understanding: 

Restitution of conjugal rights.- When either the husband or the wife has, without reasonable excuse, withdrawn from the society of the other, the aggrieved party may apply, by petition to the district court, for restitution of conjugal rights and the court, on being satisfied of the truth of the statements made in such petition and that there is no legal ground why the application should not be granted, may decree restitution of conjugal rights accordingly.

Explanation- Where a question arises whether there has been reasonable excuse for withdrawal from the society, the burden of proving reasonable excuse shall be on the person who has withdrawn from the society. 

So in case, you want to stay with your husband, you can file a petition under Section 9.

2. Going for a divorce: Now if you don't want to stay with your husband, you can file a petition for dissolution of marriage under Section 13(1)(ia) of the Hindu Marriage Act under the grounds of cruelty. As the treatment meted out to you by your husband and your in-laws amount to mental cruelty and therefore you can seek a divorce on this ground.

You can also you to register a complaint for cruelty under Section 498A of the Indian Penal Code or for domestic Violence under the Protection of Women from Domestic Violence Act or both. Your husband is bound to give you maintenance and residence as per his standard of living and the lifestyle you are used to post your marriage.