Canceling Pre-Authorized amounts

I am struggeling to short out my woolworths credit card there is pre authorised amounts that needs to be reversed I have been waitig a long time to get this shorted out: My reference number Ticket: *** Woolworths staff is not replying on emails and is very slow I have phone in to try and sort this out were they could not help me or was badly trained were they could not assist How long do I have to wait or what do I need to do to get this shorted out