Soundtech online , refund issues

Walk in stores absolutely amazing , tried the online shop , ordered and paid for an item , item became out of stock , apparently a refund was done , I havnt received the money , they asked me to send bank statements to prove no refund was done , I sent countless emails with the statements , now no response . This has been ongoing for almost 2 months now ,eventually went to a walk in shop ,got whatsapp details , sent message explaining everything, no response. This place owes me a refund for almost 2 months . I do alot of online shopping with experience of working for Amazon.com and this is by far my worst experience . The walk in stores are amazing I will give them credit for that .