Flipkart - Flipkart Issued Flight Tickets in a Closed Operator Flight

Hi In the month of June ****, I traveled to Germany on my new business fund work because of that I booked Flight Tickets through Flipkart Travel from BLR(Bangalore) to STR (Stuttgart) flights (BLR to DOH & DOH > MUC by Qatar Airways) and from MUC to STR via VLM Airlines (They Ceased their Operations on **-Aug-****) when I reached to Munich and after * hours I found that there are no such flights operating from that airport. I have no idea what needs to be done further and II have faced a lot of troubles personally as well as physically. As I was supposed to meet the investor that day evening because of my flight issue I reached Stuttgart lately as I was not on time my investor canceled the deal. Later I contacted Flipkart but almost after * months they refunded the fare that I have spent through public transport locally. Because of Flipkart Travel, I lost my deal with my investor and which caused a loss of ** Lakh INR.