I traveled to the US in July to take up residence once I had been given my DV travel documents by the consulate in Sydney. I was expecting a GC to be posted to my address in the US but instead I received a bill for, I believe, $165 for further processing. I duly paid this and received an email confirmation of the payment in early August but still there is no sign of a GC. Is this delay normal or should I phone the processing centre in the US as I am currently living in Australia.