Hi Devi...
Almost every person joining a new company faces a similar problem... Specially when the position is new in the company and the higher ups have not clearly defined the working criterias...
Further, there are certain groups, [they call themselves as core groups] which want to show that they are superior then others... and they would go to any extent to prove that...
But remain positive...
No company would spend money on a department / employee it doesn't see as necessary or not giving sufficient output....
Your aim should be to handle your responsibilities with efficiencies and employee relations is one of the responsibility...
Try organising, outbound training of "Team Building".
>>> This will help in bonding together with each other
>>> Team building exercise would show the employee that it takes a team to finish the task in time and with efficiency