I have a problem with my combi boiler any plumbers out there I can ask a question or 2?

If you are from Australia and living in Brisbane then you can contact with any local plumbing company who has emergency plumbing service such as "Abstract Plumbing" for any of your plumbing problems and ask your questions. you can also visit their service page (abstractplumbing.com.au/services/) for more details which may match with your problems and questions.