Ajio — Not refunding full amount

I ordered multiple products from Ajio order Id: #FL[protected] on 25 August 2020 from which one product which was to be delivered on 3 September was cancelled by them on 1 September 2020. After that they refunded in Ajio wallet without asking me and didn't refund the whole order amount. First of all I didn't need money in Ajio wallet, I want money back in my credit card as I don't want to use this site again. Secondly I want full amount of the item that was cancelled.
I contacted them through mail but got no reply. I tried to contact them through phone and waited for more than 20 minutes but no one picked my phone.
Ajio is fraud site that's making fool of the customers.