Metrofibre or Metrofailure?

We moved from one unit in a complex to another. Metrofibre want a change of address and R570 ostensibly for routing and tracing. The unit we are in has 2 metrofibre devices which just need to be turned on. Apparently the address must be 100% right. The only difference is the number? What could possibly be so difficult that it costs R570? They have obviously done the groundwork previously as the devices work. Looking for another service provider