British Airways admitted to changing my reservation in error and despite 8 attempts via phone calls and speaking to representatives at two airports never addressed the change in any reasonable way despite assurance by representatives that I would be notified before original flight departure and they would reinstate my original booking. I never was successful in speaking with a "duty manager" when I requested at each contact. I was also told because the error had occurred by the Newcastle call center, that other call centers could not make changes. Consequently I did not recapture the seats I had booked months before, arrived at the airport to find I was not confirmed on the original flight nor offered upgrade to be in seats that met the needs of my partner who has some orthopedic and claustrophobia issues. Sent letter to British Airways on return and have received no response in a month's time.