Durban Campworld Landrover long range tank installation

I had a Frontrunner long range fuel tank 45l for the Landrover Defender Puma installed. On completion and collection I was notified by Roy Griffiths of Durban Campworld only to fill to the first click as there was a breather problem. This only allowed the tank to take approximately 25l of its capacity. Even when filling to the first click I had numerous fuel spills in my garage. On querying the installation, he gave me a quote to diagnose the problem of R975. I have subsequently had the vehicle diagnosed by Hardcore 4x4 in Umhlali alongside Frontrunner technical feeedback. They diagnosed the problem and installed correctly for R3000. The tank now takes full capacity and no longer leaks. The opinion of the Frontrunner technical support person is that they have had a history of poor installation from Durban Campworld, with the words ' **** not again'

I intend following up with Frontrunner as it is not acceptable to have Frontrunner agents produce these mistakes.