I came to Singapore as a tourist 5th of November. As I am holding a Polish passport I got a visa for 90 days. I left Singapore 4th of February and I went to Bali. I decided to return to Singapore 7th of February. I was going to Singapore with my friend (Singaporean) who declared to pay my accommodation in Singapore for 60 days. I didn't have a return ticket to my country, because I wasn't sure if i will get a visa for 30 or 60 days.
They stopped me at the airport and said that I cannot get in to Singapore. They took pictures of me and fingerprints, but I didn't find any stamp in my passport just paper information with the reason: 'being ineligible for the issue of a pass under current immigration policies'.
My question is: can I come back to Singapore or am I blacklisted? They didn't want to tell me anything at the airport. Where should I try to explain this situation?