Online business

I ordered on the 23/10/2022 I received an email confirmation of my purchase and they not delivered anything. I emailed them on 12/2022 asking about my order they said I must wait for 3 weeks and still no delivery was issued after 3 weeks. Lastly I cancel my and they said they will refund me on the I should wait for 7-14 day if it's late 20 days but they never issued refund instead I lost connection with them.