HOKA NEEDS TO REFUND ME

I purchased 3 x hokahalf running tickets. I added a pair of socks assuming it was free but saw that I was charged for it at checkout. I could not reverse the payment. My race pack was collected and I noticed my socks was never given to me. After the race I asked a few people for a merchandise stands or help, nobody cold help. I have emailed Hoa, entry Ninja, sent them messages on Social media and they simply ignore me. Nobody has reached out. They told me to email their info email, yet I sent a few emails and nobody has responded. I just want my refund.