They say there are no comp sales for me to get fixed rate

It sounds as if at the moment, there is no way to generate an appraised value for your home, so the bank is going to portfolio your loan (keep it in house rather than taking to secondary market) for now. Banks do not like to guarantee fixed rates on loans they cannot securitize, so usually end up doing either a balloon or adjustable rate on those loans. Biggest question I would have is how likely is it that comparable sales will occur in the future so that you can refinance into a fixed rate. I would ask your agent about the history of sales similar to yours and see what he/she says.