Flipkart — Order not yet processed even after 3 days

Website: Flipkart

I order a phone on 7th with a two day delivery date and with a firm issued gst bill. It was supposed to be delivered on yesterday but even after 1 day I haven't received the order. I raised a complaint against the seller that they are processing other orders but are not processing mine. Flipkart care also confirmed that the product is available in stock but there are other issues by the seller. I was given 9th june as the date of resolution for my query which extended further. Whilst i received the call from Flipkart confirming that seller will surely be able to deliver it by today. But it's still not processed. Seller (TradePLFIPLecom) was easily selling the product everyday, but was not fulfilling my order, neither I am getting any resolution or any updates regarding my order.
I also have a doubt as I checked the seller online and got to know the review about the seller, that they have done this before also when someone asked for a gst bill in the name of a firm, they didn't process the order.
Please help me with this issue.