Dell Dell Computers Ripped Off Internet

I was just ripped off by Dell. Can anyone recommend a course of action for recourse?
The Dell laptop we have is not keeping a charge anymore. We called Dell and they tell us we need a new battery for the laptop, we purchase the new battery at at price of $192. 

We call them within the week after we received it and let them know the battery is still not charging the laptop, so they tell us we now need an adapter. Since their price was too high we bought an adapter elsewhere and tried that, we tried it for awhile but still does not work.

When we called Dell back to tell them nothing is working and we want to return the $192 battery they sold us they said it is past the return policy period fo 21 days. I told them we called the week we got it to let Dell know it does not work.

They said the phone call on record was about an adapter. So, Dell lied, or never logged in that the reason  we called in was about the battery not working.

Bottom line now they will not exchange or return the battery that is absolutely useless to us now. This prodict never worked, and is a trash product just like the rest of Dell products.
Question: what recourse do I have?