FTP Connection

I am desperately looking for someone to help me connect to my FTP site. My employer upgraded their FTP knocking several people off. Everyone except for myself have been able to reconnect. I have tried many things to try to reconncect. I have updated my Norton Antivirus, I have called my IP provider (Comcast) and they say there is nothing they can do to change the router or ports. I have tried a different FTP site. I was using WiseFTP and have also tried CuteFTP. If there is ANY help at all that anyone can give me I would very much appreciate it. I am not that computer literate so any answer needs to be without too much computer jargon. I am a medical transcriptionist and use an FTP site to access voice files.