Emirates SAA pathetic

I booked my flight from booking.com with SAA operated by Emirates Airlines. I suffer with anxiety when flying and selected seats for this reason when paying for my flight only to find out when checking in they were changed. I contacted emirates who said there is nothing they can do. Should I have a panic attack I will definitely be suing the airline as I had informed them of the reason for booking those seats. I am appalled by the service honestly and will share this on all social media