Find yourself a better MOT station next time, I know I would.
I once got failed because the headlights were out of alignment.
When I asked to be retested with the tire pressures at spec, he said he had to adjust one of them. This was on a car where the adjuster was reachable from the front with a long reach screwdriver.
He had the audacity to charge me £10 (80's value). He's never had any business from me since and never will.
I now use a garage where the mechanic advises me that something will probably fail by the following year if I don't do something and if there is a problem that's new he's very easy to deal with and gives advice on doing the fix if I go DIY.