Data depletion

I would like Vodacom to explain what this all of a sudden data billing for “peer to peer file sharing” (P2P)is all about. My data is being depleted since 17 December 2020. I hv had a contract with Vodacom for 23 years and I have never had a data issue. Nobody can explain with whom I’m sharing these files and what files I am sharing. I feel that Vodacom is evading the issue. When you ask, instead of investigating and giving an valid explanation they just credit your account with data, only to be take back by this P2P. I called the call centre and they referred me to the store and vice versa.