Your bite command should still go in every round. So even though you do not hit them during normal combat rounds you'll make some damage. So you could use that to flee heal up and go back and bite.

The balance in CF is that there will always be a match up that you will have trouble with no matter what race/class combo you choose.

edited to add this:
And no we aren't saying that the hole shapeshifter class gets rocked by polearms. But perhaps your forms do.