No, there is no dial in number anymore. It was removed almost 8 years ago. The dial in number was for Account Access issues, Billing, and some tech support but people flooded it with everything from game suggestions to ban appeals. Nobody could get through 
Now they have a ticket system that categorizes issues. If you have an account/billing/or some tech support issues Live Chat or Phone Callback become options when available (open).
What issue did you have? The system can be a bit tricky to navigate and maybe I can offer some suggestions.