OWING FOR CHEQUE ACCOUNT I NEVER ACTIVATED

I app**** for a gold bundle cheque account online and chose a silverton branch. when i went to the branch to activate the account, the consultants couldnt help me, i went from pillar to post as they said i did not open the account with them for more than 3 days and i then decided to leave and not activate the account. Now i am receiving calls that my account has accumulated over R500. i did not activate the account nor ever used it, and they never issued me a bank card. how can i owe for an account that i never activated nor ever used.