Telkom contract upgrades gone sour!!

I cannot believe that every single upgrade with Telkom has resulted in extremely bad service and utter disappointment! I am getting so sick and tired of bad service from big companies! My mother was phoned by a sales agent to do an upgrade on her one contract. The deal was not properly explained to her, she couldn't hear the sales agent properly, they did not send anything in writing, and now she sits with a top up contract she did not want. She has never had a top up contract, so why would the smear one off on her? She has been a loyal customer for years now with numerous contracts with them, so why is she being taken advantage of? That is case 1. Her other contract she upgraded to get the Samsung Note9 which is advertised everywhere, by Telkom, Samsung, Vodacom and Mtn, that is come with a bundle including of a wireless charger, tripod, HDMI cable and R500 voucher towards Samsung products. The phone was delivered, but without this bundle, with no explanation, no contact was made, nothing! This is completely unacceptable!! Companies like Telkom try to cut corners wherever they can to help their bottom line but ***** their customers knowingly with no concern to them whatsoever! Is there no regulation on these types of ********** customer service? How can these companies not be held accountable for their no-care service? Yes, we are the idiots keeping them in business, but the one is as bad as the other one! So what can we as consumers do? Keep our mouths shut and just say thank you all the time? Enough is enough!