Bad Service

I bought a AEG dishwasher and a ups on the 5th of August 2021. Took it back on the 13th of August. Their response was they can't refund me although I'm within my 15 days for a refund. The ups blew my motherboard on my pc and they want to send it for a service. They didn't even offer another ups. After it blew the motherboard do i want it back? NO NO. The dishwasher started to make a loud noise and gave me a bit of a shock, they want it to be serviced....no it's not even 7 days old and I got told to keep this big box for just in case something goes wrong. The pandemic is no reason for bad service and to be greedy