Interesting complaint. In prior flights, I have had to call UA, US, AA, BA, and a few others I do not recall at the moment many times to get a person who would allow me and my wife to sit in a pattern other than aisle and center seat.

The last go round in Jan with UA, the guy refused to give us 8 D&F on an empty 777 business class, claiming he was going to "fill C with employees!"

or: AZ on their 767's in FEB, where they do not have seat diagrams, and do not know how the rows are structured in C class.( seating was 2-2-1). wife and I were separated by a seat and an aisle.