I'm quite surprised they are calling unexperienced pilots for interview. The reason is maybe because these guys will probably stay there for a few years, and not leave after a few months due to the every day decreasing working conditions. Anyway with your experience, go for it and take whatever you can, it will be a good experience. The people who'll be interviewing you are very fair and the people working for this company are great. They managed to hire pilots with solid backgrounds (SN,SR,SAS,CX etc)in the past few years but these times are now probably over.