Is it too much effort to reply to my email?????

Please have the courtesy to REPLY to my emails, ***. Am I expecting too much? On the 25/01/2023 I wrote: Hello Charmondelay, Thank you for your telephonic assistance earlier. As telephonically discussed, I have misplaced a receipt and now I need to return the item. Since the receipt is missing, I can only provide you with the following information: The ORIGINAL item (Trolley Inverter ***) was purchased on the ***2 at 16:24:43 from Little Falls (*** 3550 02/11/2021). That receipt is ATTACHED. Then a CREDIT NOTE was issued for the full amount of R5699,00 because you did not have stock at that stage. On the 30/07/2022, I purchased a new inverter by paying with the Credit Note and a Credit Card. This is the receipt that is lost and I need to return the item. The NEW item was bought on 30/07/2022. I was assisted by Njabulo Mbatha. The item which I need to return is a GPINVERTER2 - 1600 Watt HYBRID INVERTER SYSTEM with Bar code ***. Please assist me in obtaining a duplicate receipt so that I can exchange the item which is not working correctly. The batteries run flat within 20 minutes even though the only appliance connected to it is a 50" TV. On the 26/01/2023 i wrote: "Please acknowledge receipt of my email." Well, ***, since is was too much to respond, congratulations on being the reason for this complaint.