It may also suggest that cleaning the plug also indirectly cleaned the
jack, which was the culprit all along.
Which may have been what the "smiling b****es" were trying to tell you,
but you wouldn't listen.

I'm supposed to pay attention to people who are trained /not/ to help the
customer? All /they/ told me was "We can't help you -- unless you want to
throw away this phone and buy a new one." I'm supposed to respect that?

Don't blame the victim.

I was fully aware /before/ I went in that the problem could have been with
the charger, the jack, or both. They were unable to provide a substitute
charger, which would have clarified where the problem lay. Whose fault was
that?