I bought a v8a web equipment on 2-1-2021, they mad...

I bought a v8a web equipment on 2-1-2021, they made the payment, on 4-1-2021 the purchase with canceled status appears registered but with delivery date 5-1-2021, the equipment did not arrive, I communicated via WhatsApp After all day trying to report, they told me that they delivered it to me in the week, it was not like that, today 11-1-2021 I go to Entel Morande, they make me place a claim at 105 where they tell me that the purchase was canceled that the money back is in 15 or 20 business days, I do not have a communication or proof of this cancellation, what is the responsibility of this company? Are they playing with the client? Do they have false advertising or promotion? Who responds?