Charged R1999 for a FREE replacement Router

Horrible Experience, see below:

1. Purchase the R899 monthly Uncapped Internet 2. Receive router and its faulty, doesnt switch on. 3. Send a request to get a replacement 4. Receive replacement and told to drop off old one in Sandton 5. Call and tell them that they must arrange to collect old Router. 6. Receive an invoice on the 9th October and amount of R1999 deducted off my account for REPLACEMENT ROUTER on the 10th October. 7. Im ready to come burn down their building.