working with main frame

Hello!
   I hope that all of you are having a wonderfully tranquil holiday season.
     I recently got a job as a customer service representative for a company 
which deals with governmental insurance and benefits.  I have to access the 
main frame a lot, and JFW is not reading very well at all.  It rarely reads the 
field that the cursor is on when I press insert up arrow, and when I type it 
echoes all of these strange numbers even when I type letters, and I have the 
characters turned off.  I haven't used very many programs on the main frame 
yet, but I am sure they are only going to be more complicated, and that they 
won't speak well at all.
     I'm wondering if anybody has had experience using a main frame before.  
I'm looking for any suggestions and/or assistance.  I want to get this problem 
solved quickly, because I don't want my employer to decide I'm not worth the 
energy.  I'm not sure that the city in which I live has truly knowledgeable and 
experienced people who can accurately assist me.
     Thanks in advance, and have a good day!
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