30% increase policy due to Covid as from 01/10/2021

When I joined B3 my contracts states 0% increase from B3 Funerals...Today i received an sms stating they are increasing policy with 30% due to Covid pandemic.....How is it our faults as clients couldn't they even increase with 5% not 30% this is madness ....Maybe more clients like me who signed stating 0% we should mobilize and see where we stand legally with this...We must get together get lawyer and take B3 to court for this matter is a day light *******