Vodacom selling personal details of customers

I registered my new number with Vodacom and within 24 hours I was receiving unsolicited calls and messages to sell me products. It's clear Vodacom sold my phone number immediately. To add insult to injury, their data is among the most expensive in the world and the signal sucks. Overall, Vodacom appears to be a bunch of ********* sucking their customers dry and selling their personal details to the highest bidder. Disgusting legal ********ity. I hope they go bankrupt.