Tafelberg furnishers: trustworthy?

Upon purchasing a stove, even a demo model, one assumes that an exchange warrant would be in place for serious defects. Not with Tafelberg furnishers. They sent out an technician to inspect, found the cooling fan motor came loose from fan and the mounting bracket, and was causing a short with the body of the oven. The owner could not detect that the fan was not working, and used the oven. This caused the electronic board to got extremely hot. The question now remains for how long this stove will last. I think it is unacceptable, the stove should have been replaced byTafelberg furnishers . They denied the request.