Got my goods, got my invoice with delivery- Very happy!!

I read the complaints on hello peter on this company and they just don't make sense. I asked for an invoice when I made payment and was told the invoice would be sent with my order. The product was delivered and I got my invoice. Makes perfect sense to me. If that's their policy then that's their policy, suppose they can do that as the goods are made to order at least in the case of what I ordered?