De*****ing customers

I went on their website and ordered a cellphone and before I could receive the device I was there would a test debit order on my account to check if its active and R189 was debited on January 9 2018 of which was suppose to refunded back in 3 months time and it was never done till now.

I went on and called Telkom enquired about the debit order and refund and they told it did not reflect on their system that was in March 2018 and till today it doesn't I was told by the call centre agents that they do not do debit order testing its a seperate company of which they game a number to call after numerous emails and opening of cases that they end up closing without any resolution on my side. I called the company and they told me that they only call customers to offer the devices not debit them. I dont know what to do anymore as Telkom seems not interested to help me here