Thanks Paul for your feedback, we have informed you days before the tour date that for logistic reason we will have to do this tour joining another couple and in total there will be 4 passenger (you ,your wife and another couple) in a van that accommodate 8 person and as a discount we offered you a private guided tour in Pompei with tickets included, we offered you this as an option or if doesn't suit you, we can cancel the booking and send a full refund.
so, we offered you a generous discount (private tour in Pompei with tickets included cost 350 euro at least)
for the restaurant where we normally take our client it was closed and had to change it to another one that was 8-10 minutes walk from where the car drop you off, but you didn't say that you have a big difficulty walking, you said (when we offered the guided tour in Pompei) that if you would feel tiered of walking and can not continue the tour, you will go out and stay in the car, and we told that there's no problem with that you can stay in the car but you didn't say you have big difficulty walking.
we really sorry that you feel disappointed about it, please contact us and we can send you a partial refund.
Best wishes