Argumentative, difficult, problematic, disagreeable.
If the creditor agrees, yes.
A person who agrees to work but does not earn any money is called a volunteer.
Opposing forces
A Narcissist.
Congress
FEDERALISTS :)
a pacifist
Poker-faced.
I guess you can call that person an athlete.
Acting like I do. As in "An agreeable person is a person who agrees with me."
A person who repairs pipes would be a plumber. I have never heard of any person who specifically repairs tape.
A lifelong learner or autodidact.