Vodacom upgrade ********

So it is almost time for my contract to be renewed again (Feb 2023). I get a call from *** and they say they are from Vodacom. They have all my details correct, except for the current package I am on. They threaten to cancel my contract at the end of December 2022 because Vodacom supposedly do not offer "my current flexi65" package anymore (I am already on Vodacom's new Ref Flexi 130 package since June 2022). Then they ask me to confirm that I am the contract holder and when I refuse to confirm anything, they threaten to block my line since I am "using this line *******ly". I ended the call abruptly and then blocked the number because it is the 4th call from these ********s in 2 weeks. Vodacom, how did my profile details end up with these ******** and why do you allow them to harrass and ****** your customers in this way?