Poorly Soggy Boxter Help!

[mivvi-69]

After a lot of rain yesterday evening the alarm starts going off, appears the car has taken in a lot of water, mostly in the passenger footwell. Could this be blocked drainage holes? Car given full big service mucho dosh in March by Porsche garage, wouldn't/shouldn't they check for this problem? What else could it be, hood seems sound and never had an issue before. Trying to dry it out with a dehumidifier at the mo, any help would be welcomed, gutted!