This Guy Has Not Delivered My Item in 6 Days

Hi,
I bought an Octopus | Pink from “Dyuke Store”, but although it has been more than 6 days, he still has not delivered, or not even answered yet. I want to give a negative rating for sure because he lists items he does not have and it is not the first time he does this. I encountered with the same problem before.
Here his store link:

Order ID:
17aacb5a-cedf-4d61-9e28-e41fe6536290

Screenshot:

If I cannot give negative rating for this, then what can I give for?
Thanks in advance

Update:
He did not deliver my item in 8 days and posted the same item now for a higher price. Clearly a scammer

@DunnBiscuit @op_JOkEr @MajorTom

I can see the seller has canceled this for you.

You will receive the funds from the refund into your account approximately 3–14 business days after the date on which the refund was initiated (this time frame all depends on your bank and how they handle refunds).

Regarding the user, you can also open a report ticket at Submit a request – Gameflip Help