Join Date: Oct 2006
Location: London, UK
Programs: BA Gold, VS Silver, SQ Silver, IHG Plat Amb, Hilton Gold, Marriott Plat, Accor Silver, Radisson Prem
Posts: 16,872
BA often split the total cost when two passengers are travelling and two charges (adding up to the total) appear on a credit card statement.
Silly question, but are you absolutely sure this isn't the case here?