I bought a dresser at Essops, paid Sunday and send them a POP

I bought a dresser at Essops, paid Sunday and send them a POP. I still don't have any communication from them. I called numerous times and they said they waiting for money to clear but it's fnb to fnb account. They promised to call back but they did not. I requested a refund and Ayanda (the lady I been speaking to) said that Thabile will call back but still nothing has happened even today.