Vodafone India — revoke my cell no and issue to other

Hi,

I am vodafone user, from past 2 to 3 months i was not using my vodafone no. But it was working fine. Suddenly when i checked last week with local repairer, i was surprised to see that my vodafone was sim card was not working and all is fine wih my cell phone.
I visited vodafone gallery at mahim today i. E 10 april 2018. They told me it got revoked and they allocated it to someone else.

My isssue is all my otp is generated on [protected]. I am unable to any transaction.

I seriously want some offical to look into it.