A desperate Plea for an Exchange

I bought a printer at the same Makro Silverlakes Pretoria early in 2019 and later in September 2019 I went to buy catridge again after asking one of the sales assistants to assist me. I had shown him the kind of printer I had bought and trusted his advise as I knew that returning catridges might be a challenge. I only needed to use the catridges during lockdown as a Freelance Journalist when my printer needed replacements and that is when I realised I have been sold the more expensive and incorrect catridges. Only one was opened to see if it will fit the printer and unfortunately it is the wrong fit. As you can imagine trying to have them exchanged became an impossible mission during the lockdowns period.As a Freelancer and a single parent who is trying to pick up the pieces after Covid-19 prevented me from earning any income as a Journalist. I am pleading with Makro to allow me to exchange these incorrect catridges for the correct ones which cost half the price and the balance I can use to purchase food.Herewith the invoice number: 837 and the Unique ***