Its just never enough for some people. No matter what they're given, they want more, or something else.
Some folks are just squeaky wheels. Sometimes this is fine, its okay to be a squeaky wheel when your legitimate problem has not been addressed yet. Maybe it comes down to a matter of opinion.
There's a fellow at work who is a squeaky wheel. "Hey can you tweak this like so?", or "hey can you fiddle with this little thing?". Don't get me wrong, I'm in IT, so I fix people's computer problems all day long, which is fine by me. But this guy would have me empty his recycle bin for him, and then ask me to set it up so that he could have his recycle bin automatically delete stuff according to a schedule, and then want to know if he could retrieve one of the files that had been deleted, and then want to see if he could have me add some fields to the database that he thinks would be "handy".
More to the point, this guy is in sales. He was just issued a company car. Which he does not like, and is complaining about, and apparently was downright mad about, because it wasn't the model or color that he wanted. Oh and it's leased, and he wanted it to have more annual mileage allowance. HELLO! You've been practically given a car which is new and pretty nice, and that you do not have to pay for. Oh, and he has a gas card.
I learned this morning that this same salesman is going on a two day sales trip, and wanted an advance of $1,000. Apparently we don't usually do advances for salespeople, but he'd already gotten $400. But he wanted $1,000. Whine, whine, whine.