Istore Contact Centre is pathetic

I have completed an online upgrade for an iphone and I was told someone will contact me in 72 hours to confirm if the application has been approved. No one has contacted me to date. I tried calling the Istore I got put through to the Apple contact centre and the call agents answer the call and then they act like they cannot hear you... the put you on mute and then continue to ignore you. I called twice and two different people did this to me. What a waste of time... its bad enough you have to wait months for a device but not even having a decent contact centre to help customers with their enquiries is pathetic. The kind of service is not of an international standard our local grocery stores give better service.