Settlement Letter

I requested for a settlement letter on Saturday 05/03/2016 to settle my loan. Waited 2.5 hours at the bank for the settlement letter which never came. I phoned customer care again to find out what's the hold up only to be told that they have an automated faxing system and I will receive the letter soon. So I requested for it to be emailed to me which would be quicker. I received the email on Monday at 3am in the morning. When I went back to the bank to hand them the settlement letter, they pointed out that the letter is dated 05/03/2016 and states only valid for 05/03/2016.i requested for another settlement letter with the correct date from direct axis and was told that a settlement letter can only be issued for 1 day. I don't have an issue with that except they fax and email the letter the following day which makes it invalid...what kind off system is this???? if this is not sorted out I will take this matter further!