Sr Digi School — School fee

My daughter is studying 3rd class in SR digi school kompally branch.In the month of May-2020 i paid full fee in the pandemic situation, as per school policy they had given 1 month concession. Later in the month of november they said to pay the discount amount and they said they will giving school books free for next class and as a complimentary they said they said they will be giving tab free.So I paid the discount amount for which they had given tab.Later in the month of Jan 2021 they reduced school fee by 10K, Then i asked for returning the excess amount paid now they are trying to say that the amount i paid access is for Tab. There is lot of transparency missing .Please do help me .