Refund Nightmare with LayUp!!

This is the worst financial institution ever. I would not recommend ANYONE use them as a payment method. I ordered an iPhone through iStore, but I canceled the order with iStore first and then requested a cancellation through my LayUp account. I received an email stating one of their team members would get in touch within 24 hours. It's now been over 24 hours with no response from LayUp. I have even tried calling them countless times, but no one answered. I just want my refund.!!