Customer Service

It's been two weeks since I added a line to my account and was supposed to receive my line in one business day and after relentlessly calling no one seems to know how to resolve this issue and on going to the store in person the guy there was just soo rude and asked me to get a new phone..All I need is another line for my other phone which is working perfectly fine and a cricket phone for that matter. So can someone please help me resolve this issue or maybe it's just time to find another provider who can meet it's customers needs..