My husband died last November I was sent a letter stating the amount I would receive them a week later got a different notice stating I would not receive it because of the cola increase and I didn't come across anything on social security site that claims this is a valid reason for denial and I want to appeal the decision.

Hi. I'm sorry for your loss. I can't make sense out of what you were apparently told by Social Security, but you can potentially file an appeal online at the following Social Security website: https://secure.ssa.gov/iApplNMD/start. Or, you could file an appeal by completing and submitting a form SSA-521 (https://www.ssa.gov/forms/ssa-561.pdf) to Social Security either by mail or in person.

Best, Jerry