Petilante Online — They have shown in their gst as sales even when I have cancelled the order

I have ordered HP Laptop and the order was delayed and hence when i cancelled it and the money was refunded they should not have shown sales in gst return they have shown it as sales now how do i resolve this issue because flipkart has sidelined itself by providing no information its wrong in the part of flipkart to list such a seller without having any information about them or contact number of the seller. They are the ones to check first whether the seller is fradulent or genuine rather they are bringing them on a platter through a website.