A) Kept arguing to the point they stopped caring
So PD won't answer to anything that don't care regardless of the number of people who need the answer ?
you might want to correct something there otherwise the next post would be like "we don't care about your withdrawls motherfucker either you receive it or not and we don't reply to what we don't care"
I think the statement was supposed to suggest that after several exchanges, Support recognized that the user's position and PD's position were irreconcilable, and thus moved on to more recent tickets rather than basically perpetuating an endless argument with the user.
(I've heard a number of stories like that from PD Support, sometimes they just can't comply with a user's requests/demands.)