Booked flights with BA a few weeks ago to the TLS from LHR for business and now need to change the dates. Firstly, I wanted to see the times of the flights so imagine my surprise when visiting the app and website to find no flights at all available during the last week of October/beginning of November, yet I have a flight booked with them during this time...are BA customer services having more IT problems or should I contact them to ask why I haven't been notified my flight is potentially no longer operating...