Indira Gandhi National Open University — refund my late fee charges

Address:

52/52 st no. 17 nai basti ananad Parbat new delhi -5, New Delhi, Delhi, 110005

Good afternoon ma'am
On 6th october 2019. I filled my exam form with late fees charge with ₹ 500/-, after few days i got some update were written that late date held be extended with till 20th october 2019. Before 20th october there's no any late fee charge.
I already complaint to ([protected]@ignou.ac.in) this mail i'd but they don't giving any respond even ma'am don't pick my call.. Today date is 21st oct 2019.
Ma'am tell me what should i do??
Bcoz mam it's too late... If students will be you can charged on them but if you aredoing this with students, how can they believing on you?
Ma'am i request to plz refund my amount.
Thanking you
Name : yogita uppal
Programme : mca
Enrolment no. :[protected]
Control no. : [protected]