Central Board Of Secondary Education [CBSE] — Result withhelding

Sir
I have to pay 43750/-(30000/--establishment fees, 13750-tuition fees) as pending amount of my two kids studying in fourth Std of holygrace academy mala. Trissur, kerala
My children joined last year. Due to Covid situation my husband and me lost the job during march 2020.i got a job in November 2020 .And my husband got a job again in February 2021 only. We had paid all tuition fees except fourth term. And also establishment fees 20000/- (already they had said to pay 50000/- and we agreed in January 2020 to pay the pending amount of 30000/- in March 2020) during admission time. But due to this critical situation we were badly affected and we couldn't pay the rest 30000/- .
And for that amount and the pending tuition fees amount they withheld my children's annual exam results, The Vice chairman Mr, .Clements insulted me in front of more than 100 parents and he muted me in the online parents meeting when I raise my voice against the withhelding of results, and also my children were not added to the new class group.
They are saying without clearing the fees dues they will not give results and they will not add them to the new class' group.
These are the complaints sir