Having a issue combining my when statements with my if statement's can someone help me?

debt = {american_express: 500, visa: 900, Mickey_mouse_club: 300}

puts "To pay the debt press pay " puts "To postpone payment press pospone" puts "To Run away and not pay please tell us to go fuck ourselve's "

decision = gets.chomp

case decision

when "pay" puts "Please choose the credit card you owe a balance too.\n"

credit_card = gets.chomp.downcase

if "american_express"

puts " Your debt for this card is 500 dollars do you wish to pay it? if yes please enter amount\n "

answer = gets.chomp.to_i if answer == 500

puts "\nYou just paid off american express. "

else

puts "Sorry you still owe us money "

end end

if "visa"

puts "Your debt for this card is 900 dollars do you wish to pay it? if yes please enter amount\n "

answer = gets.chomp.to_i if answer == 900

puts "\nYou just paid off for Visa. "

else

puts "Sorry you still owe us money " end end

if "Mickey_mouse_club" puts "Your debt for this card is 300 dollars do you wish to pay it? If yes please enter amount/n"

answer = gets.chomp if answer == 300 puts "You just paid off this card" else puts "Still owe us" end end end

SO i know this is all over the place. The goal here is to make a choice about paying off a credit card. I only have the paying part down so far. So what keeps happening is after i choose a card and enter the amount to pay it then goes on to the next card in the hash. Like its iterating over the whole hash. I want it to stop after i pay of one card.