Options available to contract clients under debit review

Hello Vodacom, I am under debit review!!! Please can you explain the options available to me as my contract expires at the end of January 2022. As I want to reduce the cost of my contract. What happens to the millions of Vodacom clients that are under debt review????? Are there options. And why was I not informed of this change to my contract regarding Debt Review in writing by yourselves, as stated in the T & C. All changes to a clients contract must be sent to the client in writing at least 60 days before they come into effect . I await your responce