pathetic service

I received my new card last week Monday, Gold Card, wednesday i called to cancel the premium account and the woman told me to wait for 24 to 48 hours for it to close and not to transfer anything into my account at all, i did this and then today i see the account is still open but now its -R240,74, 1 week later and its still open but now i must pay, wen i call to find out then im told there was still R90 in my account they close but yet their was only R2,74 at the time, when the woman asked me is their anything else i said yes then she said thank you for calling and dropped the call, i dont want to close my account and move to another bank but i will if this is the service Nedbank offers their clients or was it because i am no longer premium client i get the **** service