You are so helplessly lost. You really need to start from basics and ask a specific TECHNICAL question, not some vague 'help me do my project for me' type question.
You want 'bank account method' help? Tell me, where is 'bank account' on a VS menu? DOes it exist? Do you want VS to think for you?
Here is some advise. Either give up programming or go back to square one and think, think REALLY carefully about what you want to achieve. Then come back and ask a question when you have one that is fully formed. (Oh, and when you have got a question FULLY formed that is worthy of asking, it will suggest its own solution.)
Sorry for being such a c*^t, but I am an arrogant bastard who has been programming all kind of complex stuff for so long I can not bear the ignorance that laziness brings.