What pathetic service received from Woolworths for paying my account before it was even due!

I am absolutely appalled by the terrible service received from Woolworths. As a loyal customer and paying client I made a payment on my account on the 25th of November and 10th of December which was to be allocated as confirmed by someone in the credit department to December and January respectively. I am now according to Woolworths in arrears because I skipped January's payment because I made the payment before the 12th of December. Nowhere nor at any other retail store do you ever hear of such absurdity. If an account is paid, it is paid, irrespective of how early it is paid. Sorry woolworths, you have just lost an extremely loyal client and I will be closing my account with you.