If one has received a collecton letter from a debt collector, and it is just a few days past the 30 day mark, from the date of the letter. Can one still send a letter of verification of the debt to said agency, and of course send a letter of dispute to the credit bureaus, to ensure the best strategy for dealing with this? The accounts are credit card, and they do list the name, and account number, however, there are no terms and the like listed on the letter, just a name of creditor, amount, and a account number. Still too late to send a letter?