Hi sir, sir i am changing my company in al ain....

Hi sir, sir i am changing my company in al ain. Previous company cancelled my visa before 34 days and new company says that visa is confirmed but need coc of insurance if i don't have then i need to go india once and come back later. Sir in previous company my Emirates id and insurance card are same. My question is that how can i get coc and if i don't then any other way to avoid go india and come back.?