airlines
ideally you don't 'complain', you enforce your rights under applicable law(s), which depend on umpteen factors, including...
one record locator or two or more (rl is the alphanumeric booking reference)
starting point(s)
cause of delay(s)
paid with credit uk/eu card or not
etc. etc.
if your trip was uk/eu origin on a single record locator, you have pretty strong rights, usually gets even better if you paid with a credit card, elsewhere it can be grim
if you don't know this stuff, join (it's free) www.flyertalk.com and ask the question with full details under the sub-forum for the airline concerned
(
empire of the pussycat requires more champage, Mon 26 Dec 2022, 18:42,
Reply)