I check credit karma regularly. I noticed one month my bill went up almost 2000$. Called,was ignored. Called again and told they would look into it. Eventually the lowered it back but would not tell me how the mistake happened. Then they retroactively added 13 late payments to my account, destroying my credit score and now I'm unable to buy house. I have since heard from others same thing happened to them. Tbe refuse to work out a solution. How many people had 1000s added to their bill without their knowledge??