If they keep bugging you its because they want your money, not because they want to publish a book, I made a similar mistake a few years ago with a so-called agent who told me I was great and my book would surely be a best-seller IF I paid the reading fee, the editing fee, this fee, that fee and probably the lunch bill too.
it costs nothing to publish a book these days and getting into print has never been easier, but so have the opportunities to be ripped off. and having your book out there is just the start, you need to promote the socks off it and yourself and earn some readers, so if you want to spend money spend it on promotion not on publishers fees.
How wrong it is for a woman to expect the man to build the world she wants, rather than to create it herself. ~ Anais Nin