[Resolved]  Flipkart — Return of Canon Pixma Wireless printer

I have purchased Canon Pixma E470 Multi-function WiFi Color Printer from flipkart on 16th Nov. 2019 Order ID - OD[protected], which was faulty and I raised a complaint which is got returned and I got another printer but they didn't provide the fresh invoice for the same, it worked 4 months and went down due to pandemic i couldn't raise a complaint but when things started I raised a complaint and canon guy came and ready to replace the product when I gave him an invoice serial no. of the product was not matching with the invoice so called up Flipkart for fresh invoice instead of giving me invoice they said will replace the product, I mentioned them several times I don't have a brand box so just provide me the invoice will deal with canon people but they said that's not a problem we understand no body keeps box that long as it's been 11 months, after complaining 8 times following for last 2 months still they haven't solve the issues just giving false commitment and now warranty is also about to over.
please help to resolve the problem.