OK, here is the circuit marked up with your voltages:
There are a couple of standout problems:
Notice the voltage in orange is (or should be) your negative voltage rail. This should be the most negative voltage in the circuit. However the voltages in red are more negative.
I suspect that you have either misread the voltage, or you have something wired up incorrectly.
The difference between the voltages circled in red are such that I could almost imagine you have read the wrong terminals of the transistor.
Perhaps you should ensure that the negative supply rail is directly connected to the point you measured B -- A voltage here of -11.8 would be (perhaps) reasonable.
Q5 is showing signs incompatible with life. Check very carefully you have it wired up correctly.