Worst service ever.

Order a small pc part on 29 April. They came back with a response out of stock or alternative. Sent them an email for alternative part. Waited 21 working days minimum. Ask them for an ETA on my order. Said they are working with sales to give me an ETA. Still no response from them. Asked them for a refund. Haven't even attempted to contact me whatsoever. Found a different supplier that can supply me with the exact same product 3 days to deliver. I just need my refund so I can place my order with the alternative supplier. As I see it this constitutes theft. Because Merkado is sitting with my money and I have got diddly squat. So please Merkado if you do read this give me a call and refund me my money please. Very unhappy customer