My experience with Ebates was top notch when I needed to request cash back on a purchase I had made through Etsy, a new affiliate partner they were promoting. I hadn't realized I clicked through the Ebates referring link with an alternate Ebates account, so when I made the purchase, the cash back posted to that account instead of my main used one. When I inquired, the associate looked up the transaction/order, credited the cash back, and offered to consolidate the two existing accounts so that my cash back would all be in one place. All in under 24 hours.
Fantastic customer service and very attentive to the needs of their users!