ClOSED ACCOUNT

I had an account with Woolworths which was closed in 2012. I received a statement dated 07/09/2015 with a credit limit of R1000. I then went to Woolworths in Key West Shopping Centre on 09/10/2015 at 17:45, went to customer services and was assisted by a guy called Theo. I explained the situation to him and he then checked on the system and the account was still closed. He then called the head office and requested the in store card department. They informed him that the account has been long closed, I don't have any credit on the account and that If I still want an account I should re-open it. He explained to the lady that I have a statement and the card and she didn't want to hear anything and said I should just apply for a new account. I am extremely angry. How can I receive a statement with a credit limit on and when I go to the store, its a different story? What a waste of my time, energy and money to go to Woolworths. Is this how Woolworths do marketing? They should have stated on the letter that I have a pre approval credit if I still need to re open an account with them instead of sending a statement on my account number with a credit on. Kindly assist!