Air India — delay in refund of cancelled ticket

I was travelling nag - del - chandigarh and back by ai flights october 16, 2019. My flight for del - chandigarh got missed due to delay of nag - del flight, hence del chandigarh flight tkt was cancelled. On october 30, 2019, i was informed through "ecommerce ecommerce" that refund for this sector shall be transferred to my account within 8 -10 days. However, i have yet not received the refund for cancelled tkt as on november 19, 2019. Relevant documents were submitted for ready reference. There is no communication from ai.
Tkt no. Is[protected]

Kindly reimburse the refund at the earliest.