i read on a previewous bulletin that u can not delete a bank account... i created a 2nd one just because i could. But now when i complete a mission the money goes to the 2nd account(CDU International Bank). It gets annoying because when i have the money to buy something, if i buy it, the money comes from my Uplink account and i go in debt, then get charged the 500 credits for having an account in the negatives...

is there a way that i can make the uplink account the primary account so all of my transactions go through it?

Go into the financial screen and ensure that the appropriate bank account is selected. From memory, this will ensure that purchases go through here. I'd suggest checking before any major purchases.

Caveat emptor, of course.