Account division needs training

I've had a Woolies account for the better part of 22+ years. My account is problem-free. I've been out of the country for a few days and was under the impression that my account was paid way in advance. Every month I pay in a lot more than I should (usually double or triple the amount of that month's minimum payment). So yesterday I checked my latest invoice, saw that it is R25 in arrears and promptly paid R200. About 5 minutes ago a lady phones me from your card division saying that I am behind. Again, I was R25 in arrears. Not R2500 or R250, only R25. After that call you will never see me in your stores again. I also just paid the R120.86 that was still outstanding. You just lost a customer over a phone call about R25. I could not believe my ears, or this lady's attitude over the phone. I hope Woolies finds another customer who has my credit background and who would stick around for over 20 years to replace me.