Crewe Road North Post Office

I have to be really short of time to use this place. I literally live 5 min away but would rather get a bus into town. EVERY time I go in, the guy behind the counter tells me their is no such thing as International tracked and signed and I show him their website which proves their is. He also huffs at me when I ask for proof of postage on UK parcels. And tells me that 'it doesn't do anything'. Awful service.