Dude, no.
Like, holy shit.
You PAY them for a service. If you stopped paying, they would immediately discontinue said service. VMP doesn't care about you as an individual customer, let alone as a human being.
The vast majority of people aren't aware of these QC issues because they aren't here or on Reddit, so VMPs bottom line isn't affected a fly's fart by any individual's dissatisfaction. The only effect threatening to quit will have on Pauly is that he will dream of one less email in his queue. Believing anything else is setting yourself up for some major disappointment.