Just from the principle of failure of two sections - as I interpret it the OP was allowed to fly the entire test. The moment he/she left the circuit for the next section (presumably the Nav.) he/she should have been failed there and then and then flown back incurring minimal cost.
If your altimeter setting skills are as careful and accurate as your spelling and grammar
Pot, kettle and black springs to mind - toxic mushroom...
Defamation of character is a little strong, but the examiner should debrief properly - even if it is a fail - and is therefore wanting in the professionalism department so espoused by Big Grecian. I wish I could be that perfect.
Personally I am amazed the OP got through the whole test without having to change his/her altimeter at all with various agency contact. This suggests the examiner was eyeing a second altimeter, not required for the VFR CPL test. Rash not to use both, I will grant you, but not necessary.