Vodafone — [protected] corporate number of RideBoom India

It's a corporate number and we do have a few corporate numbers with Vodafone, I went recently overseas and when I came back this particular number is not working anymore I did send many emails to Vodafone but they keep sending the automatic reply that they will contact me in the next 48 hours but no one contacts me so far its been like more than one month now.
One person told me this number is maybe port to another person?
it was a special number how come this is port without my permission?
we just can't understand what is going on here.
we need this number it is printed on the business cards of the director of the compnay.
This is the info
Rltshp No./ FA ID Enterprise Code Customer Number
41138800 S-RIDEBO01035-1OTHER [protected]