I believe when one contacts the support via web form, there should be a ticket # generated and provided to ensure:
- Acknowledgement of the service request
- Easier issue tracking on PM's side, you can use analytics to assess issue trends, common occourances etc.
- Easier tracking for the customer
- Ensure notes shared by customer and PM are logged in a transparent manner to address issues. (Web hosting providers use this).
Some of this is already public domain best practices in support and I am sure PM is using some sort of system in the back-end, this just needs to be trackable for the customer end.