Debited for a service I never received

I had an existing account and i got a second vehicle and requested that the device be moved from the old vehicle to the new one. Since the old vehicle was an accident vehicle in for repairs I was told that the device will not be able to be moved. I asked for a new device and i was told I will not be charged only the normal premium will be charged. 1 month later I got debited R1300 I calle and I was told that it's the premium and the cost to move the device from one car to the other. I explained that I opted to take a new device and have 2 accounts as I was told that the transfer can't be done while my car is in for repairs. I asked for a refund it's been 2 weeks I'm still being taken from pillar to post. And the debit order was a debit check mandate meaning I can't reverse it on my side. All I want is my money back 😩 😪