Vodacom spamming their own clients

I am soooo sick and tired of Vodacom literally spamming me as their client to sell me more things that I DO NOT NEED!!!! Up to 6 phone calls a day. And if you don't want to receive calls from them you need to go through more red tape (paperwork, time and energy). Seriously Vodacom...I'm going to be cancelling all 4 of my lines and changing service providers. If I could've given zero stars, I would have. And your agents are SOOO pushy. You just irritated me to the point that I can't handle this anymore So long!