Black Friday Specials never received

I ordered a phone online on the 24 November 2018, Black Friday weekend, on the 29th November they debited my account and took R249 and when they supposed to deliver the phone on the 4th December I got a call to say the phone is out of stock and I was offered to take a different phone or cancel my order, but money was paid to them, when I canceled my order I was told I will get my refund within 3 working days, to date I have not received my refund