I looked it up on truecaller, it said "No Matched Found", I really think if it was from VFS it would have been on truecaller, so don't worry, if they needed anything they are gonna send you an email
Thanks everybody... I have a very old phone.Since I was speaking with someone else when this call came, this call was in waiting.. Before I could answer it got disconnected
Did not get any call after that... My wife also applied along with me for Open work permit. I guess this could be the reason why they called... tis cant get worse!!!!
Don't worry. If it was from VO, he will call again. It can only delay the process so don't worry about rejection due to this. Moreover, I suppose they'll email you / call again in case they need any info.