complaints department contact details

Is there a contact number / email for complaints about poor Apple customer service? I had a beyond ridiculous conversation with one of their non-support staff, and when I shared my perception of the customer service that she was offering and asked to advise me of what avenues I had available to complain about that she just hung up on me. I was hoping their normal survey / feedback request would come thorough via email (like they normally do after you speak to Apple support), but it has not come through. And before you ask, the answer is yes, I am outraged enough to take the time to complain.