Very frustrating

I received an offer for a postpaid sim deal. App**** online and it would not accept my address yet the delivery has been approved. Tried to contact fnb but their system has a problem, I have no idea where this sim will be delivered to. The last time fnb ignored my address and sent my debit card to who knows who. It too another week to rectify. It is always very difficult to contact fnb, this is when I use HP. When I search for my address it is available on maps.