NO DUAL SIM PHONES

I have been a Vodacom customer from my first phone 20-odd years ago and now have five Vodacom contracts. I use two of the contracts as my personal and business phones. However it makes it extremely difficult to always have two phones on hand. None of the Vodacom outlets I visited could assist me with a dual sim phone to make my life easier and mentioned that Vodacom does not support dual sim phones. I think that Vodacom should provide their customers with the choice of having two contracts on one handset.