Bad Service and Worst Attitude

I have a garage card for over 10 years. Every now and then I exceed the limit, but always paid the full amount with my debit order. 3 months ago I had ***** on my account. Standard bank to date has not contacted me to set this matter straight, but is very quick to ask for monies. Never has this debit order returned and never have I paid less than what was outstanding but for the past week I received inundated calls to collect from me, but for the past year I have never even received a statement, but just paid. When I mention this, it becomes my problem and responsibility to obtain same.