I was given a voucher as a Christmas present from ...

I was given a voucher as a Christmas present from my Son and Daughter in Law for a 3 course lunch for 2 at Moddershall Oaks, I took my partner with anticipation for an enjoyable afternoon.
We both chose soup of the day, it was barely warm, we both chose Ragu for our main meal, two words, dreadful, tasteless, I complained and was given an apology, but that didn't satisfy me as I was given the voucher as a Christmas present and that is what that meal should have been.