Vodacom customer care INCOMPETENCE!

I tried to upgrade my contract since November 2019. Customer care have a DON'T CARE attitude and they are grossly ***********. They kept giving me excuses for not being able to match deals or even give me the black Friday special. I have been met with some rude and mostly very *********** customer care agents. In February 2020 when I tried to cancel my contract, Annelise from the retentions department convinced me to stay and offered me a very good deal. She promised that my dual sim would still be functional and that nothing on my contract would change. My dual SIM was disconnected on 29 February 2020. I phoned Vodacom many times over the last few days to get the problem sorted. NONE of the customer care agents has a clue of what to do. I have been transferred to over 10 people and eventually to a third party called Mondo Customer Care. WHY?????????? I even sent a complaint to *** - 3 days later and NO RESPONSE!!