I would take it back to the dealer and complain.

but in general try something like Meguiar's Quick Interior Detailer or 303 fabric/carpet cleaner.

 

I use Meguiar's Quick Interior Detailer almost every other day to clean up minor messes, and the car stays looking very clean. At some point you will want to treat your leather with this: Poorboy's World Leather Stuff - 16 oz | Detailed Image

to make it looking fresh and prevent cracking. Leatherique is very good, in fact I used it couple of weeks ago on my other car to restore very neglected leather and it worked great. But for conditioning, Poorboy's World Leather Stuff is awesome.

Also get some 303 protectant, it is very good for vinyl. leather, even tires.

Also agree with others, DI is the place to buy your detailer supplies.