Club Factory - Club Factory Not refunding

I returned the shoe ordered against order no. SO********* due to small size.
Return was picked up on Sunday ** Mar and was delivered to Warehouse on ** Mar.

On ** Mar return was rejected due to Quality check fail "defective/damaged item". Customer service executive is saying that the product was not received as it was shipped. They mentioned that the sole of the shoes are dirty.

I checked with the courier boy who picked the return & he mentioned that the package as shipped as it is and he shared the picture of shoe as he took it for proof.
attached is the same for reference.
You can see its a black shoe & how clean it is.

I have also raised a complain request through Chat portal and below is the request number.
#*******

I mentioned that if shoes are used are per company then return them back or i can come to pick up.
But they are saying that we will keep both shoes & money and will not give anything to you.

Please help.
They are simply looting people.