Charges For Withdrawal From Overseas Student Programme

In Mar 2020, I had enrolled my daughter aged 16 in a Student Academic-Cultural Programme to a foreign country during Sep-Dec 2020 offered by the Indian Branch of an international organization by paying the first installment. The terms of the agreement were that in case the parents withdraw, we need to forego some charges. During the last week of Jun 2020, the organization said that they have postponed the program to Oct - Feb 2020 considering the global pandemic and asked us to communicate our willingness for the postponed slot. As our daughter's exams will start in Feb 2020, we could not accept the proposed schedule. Now the organization says they will refund only after deducting administrative charges. Do we have a right to full refund considering the above given that the organization would not have incurred any expenses on account of total lock-down and uncertainties in international travel? Thanking you in advance for your valuable advice.