My R16 000 nightmare!!!

We purchased furniture at OK Furniture Southgate on Friday the 14th September 2018 .The furniture was delivered on Sunday morning but I couldn't fit through my door because upon purchasing I was not asked about the size of my door by the consultant Brian, I then sent it back and refused to sign for it. Monday morning I was back in the store for my refund it's then when my woes began . I was told they are unable to refund me because the store had no cash which is strange because I had paid by card . They told me they were going to refund me cash once the store had it . They could not tell me exactly when i would have money and why it just could not be sent back to my card. I requested to see a manager and I was told the store had got no managers we were presented with someone who said she was a trainee her name is Tsholofelo Moreile. After much back and fourth we left the store with confirmation that Friday the 21st I would have my money. Today when i came into tge store they told me they dont have the money I told them I would not leave store without it. They claimed they got on the phone with other branches to request this money of which they were unsuccessful. They are once again giving me a run around I am extremely dissatisfied I don't have R16000 laying around I need my money today!