No answer at Call Centre for an hour

I have been told that the ONLY way to link my new credit card to my internet banking is to phone ***. After failing to deliver my credit card to me for 2 months despite me waiting at home for hours for their couriers on multiple occasions I finally had to collect it from a branch. I now need to link the card to my internet banking and have been listening to music on this number for an hour hearing that they are experiencing high call volumes. I have used my whole lunch break stuck to a landline and listening to their irritating music with yet again no service delivery. It seems impossible to have even the most basic service delivered such as getting my credit card and linking it to internet banking (is this not a basic and normal banking function?!?). And all this despite the fact that I pay loads extra for Premium banking. What a shocker. To add to my woes there is an amount carried over from the card that they replaced which is now outstanding for 2 months and I have no way of paying it. So they are now charging me interest I have accrued for their bad service. I'm astounded by their abysmal service.