Appalling service from start to finish. Left without a gas supply for 9 weeks. I have a 5-year-old child and was not able to use my cooker, heat my home or wash my daughter with warm water. There was one screw-up after another with bulb, every time a different staff member confirmed that another employee had made a mistake, yet never any resolutions. Even now almost 3 months later I am still trying to get this resolved. Customer service staff even went as far and hanging up on me. Awful customer service. Do not use bulb. I cannot express how bad they are. I never write reviews. This should give you an idea of how bad my experience has been.