Order cancelled despite correct payment and procedure.

On 2 December 2017 i purchased a television via OneDayOnly Offers. I paid the total mount of R2908 via EFT and emailed proof of payment to ********** within the 24hrs allocated However when i logged onto my OneDayOnly Offers account at a later stage my order was labelled as cancelled. I then emailed customer services and was told that my payment was not received. I then forwarded them the email containing the proof of payment that i had previously sent. My complaint was then forwarded to the finance department where i was told that I should receive a refund within 24-72 hrs as they had run out of stock. I am incredibly upset because I will not be able to find a smart TV at that price at any shop and I had followed correct procedure.