No stock or refund received

I ordered a product on their website in November 2024 and after receiving my payment did they advise me that they were out of stock. There was no indication on the website that they were out of stock. Their 'customer service' team advised me via email on Three occasions that they were awaiting stock. I requested a refund and received an email advising that my refund would be processed. It has been more than 8 weeks and my refund has not arrived and my emails are not being answered and when phoning the listed 'customer services' number all you get is a message stating that customer services is not available and to send them numbers of email which doesn't get a response. The refund has not been paid out to me after a few emails Very Very poor customer service..