PayPal support page isn't visible even for logged in users. Any email to support@paypal.com is automatically bounced. The support page is a hidden page in PayPal (nice way to ensure good customer support, isn't it?).

You can find it here - https://www.paypal.com/ewf/f=default
It has a standard set of questions which tries to outguess you.

Few pointers:
1. You should login first to get more options on this page.
2. Choose a topic as well as a sub-topic.
3. Write a concise summary of your question for faster response.
4. Fill in the details when asked