Goldenretrievergirl, firstly with regard to the modules, did you have to officially enrol in each module and were they formally assessed? I'm asking as formal courses (coursework modules) may have a cut off date beyond which you don't get fees back.
If it is difficult to get all or part of your money back, can you perhaps use your work (minus the modules) as credit towards your MA instead?
Tudor's advice about checking with your student union or grad research administration personnel is a really good way to gather more information. Good luck with it all and best wishes for future plans.