On my credit report there are 3 collection accounts and 3 credit cards in good standing. One credit card has been opened a year, one has been open 7 months, and the other was only opened 2 months and then closed because it never arrived. They sent it, apparently it was lost and I never received it but they still reported it as 2 months paid satisfactorily and then it has lost/stolen below it. Should I dispute the lost/stolen card since I never received it? Is it hurting my score having an account that was opened 2 months, or does it not matter?