Worst service

Worst customer experience I've ever received. Purchaser door speakers, didn't like them as they sounded bad so I returned them on the spot. I was then told my refund will be processed into my account. 2 weeks later, no refund. When I call them they tell me to call the bank. Bank says no refund has been processed by the said merchant. When I call autostyle they tell me to whatsapp the query. When I whatsapp they tell me to call.