i accidentaly put another acount and my icloud wat can i do

If you can't log out of the account, take the device, the original purchase receipt, and a photo ID to the nearest Apple Store.

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or contact Apple ID Support. They will need to see the receipt also.

Apple ID Support

Apple ID Support (2)

Apple Support by e-mail or chat Select your device, Battery, Power and Charging, then Power adapter not working to get a chat option. If you need to talk to them, ask them if they will do a Skype or FaceTime with you.

Apple Support using Twitter

Can you logout of that account, i.e. the one you accidentally entered, and login with the correct credentials?