I Report Stock Issue And Delayed Refund On Mango Online Order

I purchased a product from Mango's online store. Although the item was listed as in stock and my payment was successfully processed, my order was later canceled due to "out of stock" reasons. I received an email about this cancellation, but no proactive customer service support was offered.
When I contacted Mango customer service, I was told, "There is nothing we can do," which left me feeling frustrated and ignored. Despite my clear request for an immediate refund, they informed me that the refund process would take up to 10 days. Meanwhile, the same product still appears as available on the website, and payments from other customers are still being collected.
This situation has caused me both financial inconvenience and disappointment. I expected much better service from an international brand like Mango.
I explicitly request the immediate processing of my refund and a clarification regarding the misleading stock status.
Progress
I returned the product I bought on July 1st on the same day to Mango, again due to their stock error, and today is the 22nd but still no payment has been made. Even though I called customer service about 10 times, when I called again today, they said it will be processed partially and paid within 12 business days. This is the first time in my life I have encountered such an amateurish customer relationship and such a poor service approach. I will not shop from Mango again.
