Hi I am working in present company for 7 years since 2014. Signed contract for only 2 years till 2016.After 2016 I did not sign any contract.Now I got job offer from another company my profession nurse with dhp license.I give resignation with notice 2 months my last working day 30 October.Now my company told me they will not give NOC and sign and stamp in resignation letter.i contacted my new company but they are not interested to go through ADLSA.Anybody have solution.Can my present company cancel my visa?