Fedex please give me an invoice so i can pay you!

I was told to create an an account online so i could be able to ship my international package. I did this, got a quote online and decided to go with Fedex since it offered me a better rate- discount for using an account. I have been trying to get an invoice so i can pay Fedex for more than a week now and they keep giving me the run around. First i was told that it would take 30 days for my account to load in the system, but if i can use the account doesnt it mean its in the system?? One consultant told me that since i am an individual i need to go to their depot and make a cash payment. Like really Fedex, why do you think i chose to create an online account and have my package collected? Another one told me i should wait for 4-6 weeks to get an invoice they cant 'pull it' yet. Come on guys, i am asking to pay you, not the other way round. What business doesnt want its customers to pay? I am tired of calling your customer service and being told a different thing each time. When the we lose the call connection during a call, the agents do not even bother to call me back. I have to call again, start afresh with a new agent and be told a different story. I hate owing..so let me pay you Fedex and get this over with please.