Closing of Current Account.

I was a loyal client of Standard Bank since the age of 19, I moved banks last year as i got married and my husband decided we used the same bank. I was not aware I had to notify the bank to close my current account, I assumed the will see that no funds are coming in and the account will automatically close. Life went on and continued with my new bank. One day I got an sms from a company that wanted to deduct money from my Standard Bank Account and I was shocked that the account is still active. I went to Tygervalley Branch, Cape Town in November last year to query this and asked If i cant close the account and pay off the arrears i had accumulated, their answer was NO i had to pay it cash. I asked them why I was not given a call by my trusted bank to advise or query about my account. I have not been able to gather the funds I was told to pay and I believe interest is still being charged. It was R2500 then , i am not sure by now how much it has accumulated to. I believe as a loyal Standard bank client who has had a savings to a cheque account and a credit card holder surely you had my details and you would have seen that no funds are coming into my account and called me to query. I want to close my account but I do not have the funds that Standard Bank want me to pay