Thank you. I've done this as well. It is very difficult to get in touch with a rep on phone. Most times it gets automatically disconnected after few options.

Hi, this is regarding visa application for FLR. I received a letter from the home office (3 days after the date of the letter) that we need to pay additional £200 immigration health surcharge (we have already paid £300 which I now believe is the incorrect/insufficient amount). The letter stated that...