Basically I have a credit card which I use to make purchases instead of my debit card, for security/safety etc. Every month on payday I pay it off totally, which has worked well for me. However because of Xmas my December pay day was about 10 days early, so I paid the card off relatively early. I'm a bit of a fool and tend to ignore the proper statements, I just pay it off every month and peruse the transactions online to make sure I'm not getting robbed.
Paying it off every month tends to mean I pay once per statement period, however this time I've paid it off, then continued to spend on it before the statement for that period has come out. payment window goes from 24th month to 24th month roughly, so In Decemeber I paid twice, (1st & 20th) but my January pay didn't come til Jan 30th, so I've been hit with a late fee and interest (which is fair enough as it was my ignorance that caused the issue).
Have I knackered my credit rating? I feel like a right idiot as it was my prompt paying off that's caused the issue.