Vodafone Idea Limited — sms scam and looting money by idea

I am having a vodafone prepaid connection and scam sms in the name of idea are sent to my mobile number and amount is deducted from the main balance. When inquired with the vodafone customer care they said all the vas services are blacklisted and amount is being deducted by the third party content. The highlight of this looting is the messages are sent from idea which is part of the vodafone idea limited company and they are saying it as third party. When asked to block these sms they are saying its not possible.
*message sent from "vz-ideacms" "vm-59343".