We have booked a trip to Tioga tours because my pa...

We have booked a trip to Tioga tours because my parents had already done this before and this was good.
We were well helped and received good advice, only they made a big mistake for us and this was not necessary.
We wanted to fly a class higher because of the long journey time and can not sleep on the plane then it is so nice to have at least good seats. We have indicated this during the interview, but her answer was yes, you have to change this yourself to a higher class in society.
At KLM this is not a problem, but we fly back with Delta and with this company you immediately have to do this with books. So we have been misinformed about this. Having been in contact with Tioga tours again, said we could not / did not want to help and meet with this. It would cost us thousands of euros to transfer this, while if this went right, a few hundred would cost.
I find it very unfortunate that we have been misinformed by this organization otherwise we would have taken it very differently and there was not already a wrong stamp on our journey that you only 1 or 2x in your life is going to make. Very unfortunate that they do not admit their mistake and can accommodate us.