Sri Chaitanya Techno School — Behavior of Admission staff

Today admission staff was very rude to my mom in Ramachandrapura Branch, Bangalore. My mom is next good at using phone or banking related activities. My mom visited thr school to order uniform to my sibling, since the payment can only be processed through online, on a call I requested them to send UPI ID or screen shot of QR code, but they refused to initially telling they can't keep assisting each and every one who comes as it would take hours to assist, they even to threatened to cancel the admission, after continuous requests from my mom they ordered the books after sending me the screen shot, is school so incapable of assisting such things to parents who are not aware of things.
Yesterday they even laughed at my mom for knowing few things. So, utterly disappointed with the admin staff.
We held the School at very high esteem, but seeing the behavior have to think otherwise.
Hoping they are not so rude the next time and to any other parents.