Credit card nightmare disgusting service 😒

I am utterly disgusted with the service from woolworths credit card department, I was given a credit limit and then was told I over used it I question they said there was an issue and will investigate and contact me ,heard nothing I called them ,with absolutely no solution now I'm forced to pay 11000 on the card which is ridiculous I was told by Huda absolutely rude consultant that woolworths allows the credit card to be over used if ur payment profile is good ,I didn't even pay the first installment it was a new card, I kept checking my balances everytime I use the card it was always showing available balance how was I to know the card was over used their system was not balancing the balances now it's my fault, this is very unfair and over committing a client and I don't think that that is ethical on a brand new credit card for the card to be over used by 10000 on the first month.now I'm left to struggle it out and I'm not getting any help when I call in while being assisted the call dropped over 4 times I must call and re explain the situation all over again and each person has the own story to tell,gosh wait of airtime and no assitance ,totally disgusted I would never recommend woolworths to any one