Vlive *****ing data

I have various sim cards used for remote monitoring of farm equipment, it's not used in a phone at all. After years of using it, one sim card all of a sudden started using a lot more data than before. This has been on going for a few months. Upon contacting Vodacom with all the necessary information via e-mail (they never call back on their "call me back" service), I received an e-mail back with the following information and instructions: The number is subscribed to Vlive content, a Vodacom App used for websites and streaming - this sim/number is not used in a phone, how is this possible? Then instructions on how to unsubscribe from Vlive, to open chrome and go to live.vodafone.com - this takes you to an unsecured German website. Lastly I was instructed to do this on a regular basis to avoid being billed - in other words Vodacom is okay with someone else obviously accessing websites/apps with my number on a regular basis. Customer care offered no real help or solution and will continue to bill me for data I don't use.