If I have a $100 limit on my credit card.  I spend all $100 but pay nothing back.

I go to my credit card company and say “Look homie, if you raise my limit to $200, I’ll pay off $50 now, but I have bills to pay so I have to use up that extra $100 right away”

That means although I’ve paid $50 off.  I’ve added $150 to the card and am now at my new limit of $200.

What part of this is confusing?