Does Rototank actually know what they are doing

So after so many unanswered phone calls , and some answered, so many emails and so many requests for an invoice with details( which they have by the way) They now send me another e mail saying they cannot tell me when my tanks are due for delivery unless I have an invoice with my details, which as I say after many tries I supp**** and they sent me the invoice. I am so frustrated. I know that due to the water shortage they must be busy, but this is just pathetic. They dont seem to be even aware that I have in fact already paid about a week ago, so the money is in their account.