unhappy

Hi i've been contacted by this company 20 September 2022 I've been told that im being over charged by creditors with my installments.At first i was hesitant but the agent then put me tru to her manager which explained the exact same story n they are helping to get a reduced monthly installment and get south africans debt free.I consent because if o have lower monthly installments then i can use that to make extra contribution to my creditors.I am now under debt review and handed over woch they at this company didn't explain to me now i would like to cancel their services as its not a month yet .No one is responding to me on their whatsapp lines and i also emailed them waiting for reply