Return it. If it happens again, return it again and go back to what you had. I just use a little creamer in my coffee. I like the combo of the bitter and creamer. We get the Folger's French Roast. DH tried to bring home what he used to get. Told him I was tired of tasting nothing. He tends to be frugal with the wrong things. Sometimes have to tell him to add more or I will.