Yaantra — order was cancelled but prepaid amount is not refundable

Address:

Gutturu,(V) (Post) Harihar (T) Davangere (D) pin :577601

Sir
I am bought refurbished OnePlus 6t mobile, Yantra order id is B2B[protected] .mobile delivery was delead to lockdown situation, and after one month waiting I am dicid order cancel I do but prepaid amount not refunded my bank account.I am call customer service but no reply. please give me a justice..