Registered under falls information

Hi, I studied with oxbrige Academy, doing, knowing that I'm doing a national diploma in Occupational Health and Safety, later last year, I received a call, that said they are not allowed to offer a National Diploma, it will be a National certificate for 3yr duration, now that I've finished the course, they say it is a s**** course, which is not even registered under South African Qualification Authority, and they are not allowed to offer that course, I just want to be refunded, I've waisted my time with these college.