Sat whole weekend with no money (Thanks)

I Brought 3 tickets on Computicket Website. I called the call center to add another 2 tickets. they informed me that i need to buy 5 New tickets and they will refund the 3 tickets within 3 to 7 days. They then could not do payment online for the 5 tickets so i had to drive 23 KM to Checkers to pay with the card. This was done on the same day. They called me back and said they were processing the refund and i should have the money back by Thursday 14/09/2017. I did not receive the refund. I contacted the call center and was told it would be in the following day Friday. Once again this was not done. I called and spoke to a supervisor on Friday and she said she would sort this out and call me by closing on Friday. This was not done and i did not receive a call back from her so i called again on Saturday and spoke to another supervisor explaining that this was unfair and i now have to sit the weekend with no money as they have got My money. They apologized and said they will call me on Monday.I received a call on Monday 18/09/2017 at 08:00 to say they are working with issue and will contact me in half hour. It is now 13:39 and i have had no response once again.