Bad service/ Want money back

I brought a bed at sleepmasters Moreleta Park. I received an sms that the bed will be delivered on the 22nd of February which was a Wednesday, the sms had a reschedule option if you won't be available on that did, I did a reschedule for a Saturday that the bed should be delivered then, I then received another sms that approved the new delivery day. However the delivery guy came on a Friday which wasn't the agreed date, I advised the guy that delivery had to be done on a Saturday the 25th and not the 24th of February. He had said that he will then deliver the bed the next day since they is no one to take the bed and sign for the delivery. Saturday I called the guy and he said he has taken back the bed to the warehouse and doesn't have the bed and he won't do any delivery. I did another reschedule for a Saturday delivery which will be the 4th of March. 4th off March no delivery still after I got a confirmation sms from the delivery department that they will deliver the bed. Called the delivery guy and delivery service, no answer to the calls until I got the delivery, I asked about the bed and they say they don't have the bed, I called the shop where I brought that bed that am honestly not happy about the service because I have fully paid for this bed and I have stated very well that I wash for the delivery to be made on a Saturday because they is people available at home on weekends then during the week. The gentleman at the shop also said he is surprised that all this is happening because he has been communicating with the delivery people that, I requested for a Saturday delivery from word go but that wasn't done. In this time I honest want to be refunded back my money by Tuesday the 7th of March because am tired off this disgusting service that am getting from Sleepmasters. I am very disappointed and annoyed with the service received. Please help in this matter.