Question Time: How to get energy credit back, and should you invest in gold?

Martin Lewis answers your questions on absolutely anything and everything (within reason!), including how to get energy credit back, student loan interest rates, should you be investing in gold, and is overpaying your mortgage worth it? You can get in touch with the team by emailing martinlewispodcast@bbc.co.uk – make sure to send in your burning questions and any successes you’ve had following Martin’s advice!