I use Walmart. Been using it for about 9 months and it's a great service. Signed up for Netflix first, for a free month trial about a year ago. Near the end of the month trial, I attempted to cancel, and they offered me another month and I accepted the offer. They clearly stated that they wouldn't bill me till the end of the second month, however sure enough, I was billed immediately. Their FAQ's on their website don't address this problem, obviously, so I searched long and hard for a phone number, which I couldn't find because they don't offer a phone number for customer service on their site. My only option was to use their email form on their website to submit a question. They of course never responded to that. I stopped using the service and contested the charge with AMEX.
Drives me nuts when these companies that do business online don't give a phone number for customer service, or make it next to impossible to find a number. I understand the cost structure, and why they do it, but some issues/questions fall outside the box, and at the very least, respond to incoming requests!
Won't give them my money at this point when Walmart is just as good, and they've given better service.