Flipkart — Order cancelled but refund not credited in my Flipkart Pay Later Account

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I have ordered a Livgaurd Inverter and battery in flipkart on 6th May 2022. The expected delivery date of the product was 15th May 2022 buy the product was not delivered and the delivery date was extended to 19th May 2022 again the product was not delivered and it was extended to 22nd May 2022...I have spoken to nearly 8 Flipkart Customer support executives but they are simply waste...finaly on 23rd may 2020 i had a call from flipkart support team...they said that we are going to cancel your order...In flipkart app it was showing refund accepted till now i haven't received the refund amount...the main point is i have ordered the product using flipkart pay later option...since the refund amount was not credited to the pay later accound it was showing me to pay my 1st month due other wise the penalty amount will be added...How can i pay for the product which was cancelled