There's a Trello "PowerUp" for Helpscout, but not one for FreshDesk.
I know there is a "FreshPlug" for Trello (https://support.freshdesk.com/support/discussions/topics/311073) but that is just a one-way communication to create a card in Trello (useful).
the HelpScout "PowerUp" in Trello also updates the Trello card with information:

What Powerups look like in Trello
(these powerups are only available if you have a Trello Business subscription)

It would give FreshDesk visibility within Trello FWIW.
You should talk to Trello...

