First of all, I agree 100% with everything JeffE wroteeverything JeffE wrote, so I won't repeat it here.
As for how you should describe this in your CV / résumé, I'd suggest describing your M.Sc. studies as in progress, with a brief parenthetical note explaining the details (e.g. "studies completed in 201X with GPA Y, thesis approved with grade Z; formal completion delayed pending resolution of financial issues").
After all, that's what your situation technically is: you haven't received your Master's diploma yet, but you've completed some of the requirements for it, and may receive it in the future once you complete the rest. The fact that, in your case, the missing requirements are financial rather than strictly educational does not affect this main point.
I wouldn't dwell too much on the specific details in a CV, since it's supposed to be a brief summary of your experience. In particular, you do not want to come across as bitter or accusatory, nor as financially irresponsible. A short and neutral phrase like "financial issues" is probably best: if the prospective employer is curious, they'll ask you about it. (Do expect it to come up in an interview, if you make it that far.) Or just do as JeffE suggests, and get someone else, like your dean, to write a letter of recommendation for you explaining the situation.