My icloud apple ID had been disabled after icloud services downgraded my 18Gb documents in the cloud to 5Gb. I can't updated now because when i try to do it i get a message saying that my ID is disabled

My icloud apple ID had been disabled after icloud services downgraded my 18Gb documents in the cloud to 5Gb. I received an email from icloud services a couple of months after i upgraded my icloud storage (on Sept30th) saying that my billing info was wrong. In fact my credit card was outdated so i updated my credit I can't updated now because when i try to do it i get a message saying that my ID is disabled. Can you help me?? I can't access my docs now...