I bought a BA round trip ticket last summer in the UK to Hong Kong. Needed to put a return date and figured I'd go back sometime after CNY. Ticket clearly said that I could change the dates online for free and would have to pay a small fee for phone changes. Flight was a code share and ended up taking a Qatar flight to HK and return is BA direct. Well it's time to change the return flight date. I login online to only find that online changes is not available and need to call/ or FB messenger. Get on FB messenger and the CS tells me that the penalty for changing the UK flight is 150GBP. Before I call back, anyone have a similar experience or have any advice to share. Thanks.