Vodacom cheats with contract

I've been a Vodacom client for about 15 years. I have been on the Red Premium Package for 4 years. End of June I upgrade to a new phone, and spend an hour on the phone to negotiate a further 2 years on the Red Premium. So, I used it on that base for July. Come 1st August I suddenly find myself on Uchoose 175, and on 2nd August have no calls nor data left. The consultant tells me they will reverse me to the old contract but only in September! "That's the best I can do, sir". In a time of Covid19 one needs your phone with enough data and call minutes more than ever. This is now the position Vodacom puts me in after 15 years.