Game - No delivery, no response (8 days)

Online Shopping - Game Stores - no delivery after 8 days! On 9 April 2020 we placed an order for a printer cartridge to be delivered. One email was received informing us that it's only the 4th day and that it usually takes 3-5 days for delivery. Now we are at 8 days and still no delivery, no response on numerous emails sent. Cannot help me over the phone as I cannot tell them which store this is, it was done online, how would I know which store? This cartridge is essential for working from home. I am unable to perform my duties due to this. This is unacceptable to say the least!