Refund for Cancellation of Booking

Tried booking movie tickets on 15/04/2016 via cellphone. Funds were deducted from my bank account however the transaction was rejected on the website. After calling in on the 16/04/2016, they were able to confirm that the tickets were cancelled and a refund would take place within 24 hours. I called again on the 18/04/2016 and was told that if tickets are booked on a weekend, a refund takes place after two working days. I called AGAIN on the 20/04/2016 and was told that this time a refund will take place after 3 working days and that I would have to provide my bank statement to prove that I have not received the refund. I called today, 21/04/2016 requesting proof of the refund only to be told that the manager was to email this detail to me, I then called again and was told that the manager is not available, I have left a voicemail and have yet to receive some form of response. With the banking technology available today, sms confirmations when funds are deposited or withdrawn are readily available which proves that the refund has not yet been processed.