I enrolled in medcaire because I am 100% disabled. the cut of for enrollment was March 31st. I just recieved a letter yesterday stating I am can not get coverage because they did not recieve my request for enrollment till April 16th. I have the tracking number and the overnight reciept from the post office showing It was maied and recieved by social security 3 days before the cutoff date. Is there a way to fight this.