Diktator fuel injector box

I bought a dictator fuel enjector box brand new. In Vereeniging those people did test it infront of me and it did work.As I got. Home I took my car to Extreme Auto electricians to have the box installed,as they did and the box still worked they started the car and there were spark,the only thing still left was to map and dino the box and car so I took my. Car to Advanced Motors here in Rustenburg to map and Dino the car.I did not ask them to do anything else on the car! This was on the 9th Dec 2015 and they phoned me on the 14th Dec 2015 that I can come and collect my car.At arrival the receptionist charge. Me R250 for testing of the box and told. Me the box is not working when I ask to speak to Kobus he wasn't around ,the box was taken out of the car and was just lying on the floor I spoke to Wayne who apparently was working on. The car and said that the box was working it had spark and the car did start his response was pulling up his shoulders and said Kobus worked on it I must speak to Kobus but he wasn't around,everytime I want to speak to. Him he is not around! The box did work 100persent and now not at all why?