Indian Oil Corporation [IOC] — indane gas connection

I have my mobile number being used by someone for a gas connection with Indane. That is unauthorised and not being used by me or anyone of my family. We have a separate Indane connection ourselves. I am getting messages on my phone regarding that gas connection in Umrani, while I am in Kolkata. The consumer number and delivery details are being sent to my mobile. I have tried everything possible to get this rectified, by calling my gas distributor who said he can not help and I call the IVRS helpline. The helpline is not even allowing me to reach customer care due to distributor number and consumer number of the other has connection not matching. I checked the details of that other connection through Paytm using my mobile phone number. There is no way of lodging a complaint on the Indane website also or sending a message through that, as those links don't work. I tried calling the toll free numbers given on the website also, which did not even connect.
Unable to find any other way to resolve this and needing to rectify this urgently as I do not want my phone number being used unauthorised say by some people for a gas connection, am making this request to have this checked and rectified urgently. This has been happening from 27 November 2019.
The consumer number of the connection using my number as per the smses I received is -
Order for Cons No [protected] is registered with Ref No.[protected].Refill delivery ETA:2 days. Pay online at http://payit.cc/I[protected] .Be Home, Stay safe

Also last order number -
Order[protected] is invoiced. Share DAC 2966 on delivery. Download eInvoice thru https://cx.indianoil.in/webcenter/portal/LPG/pages_h?cId=[protected]