I wouldn't sweat it much, everyone has an opinion, everyone is going to respond, reply, put their two cents in.
There is nothing wrong at all with voicing your displeasure or dissatisfaction with a site or service, in fact as I understand it, it's encouraged so long as it's done in a civil manner.
Heck, just read the videoslots threads, people rip them a new one at least a dozen times a day warranted or not ;-)
One just has to expect that while you're absolutely free to voice your opinions, feelings and experiences..others are free to do the same, to voice counter opinions and play white knight to their damsel casino in distress.
We all play black knight from time to time, buff up your armor and allow the detractors to get lost in their own eyes in the shiny reflection ;-)
Cheers!