No Refund on Faulty Product!

So on the 29th November 2019 I ordered two pairs of wireless bluetooth earpods from these guys and when they arrived on the 10 December 2019, one pair wasn't syncing properly so I sent it back. OnedayOnly's couriers came to collect the faulty earpods and advised that they would be in contact with their suppliers regarding a refund. To this day, 20 January 2020, all I have been receiving is emails about them following up and will revert with feedback. So it's taking over a month now for them to give me any form of useful information or even whether they plan on refunding me anytime soon. They're quick to take your money immediately but you wait forever to get your order and now even longer to get your money back!