DWP say sorry?

After my PIP journey from form to appeal win, I wonder if the DWP could at least apologise to the claimants for the stress and expense of the time ( 9 months)  from HP assessment MR etc and long waiting instead of the final letter from them " Following the appeal decision you have been awarded the following" no apology whatever from them as if nothing had happened! After all we are just numbers in the end !!!!!!!!!!!!