I have a business background, so I know that they dont understand accounting, at all.
I wanted the work done, and it was satisfactory, however the guy insisted his partner dealt with the finance. She is an educated person, so should be able to cope with producing invoices and answering emails.
Absolutely, if they do the work properly, and present the invoice, they get paid immediately.
Ive asked for a statement, they havent sent one, ive told tbem to refund the overpayment and return my goods within seven days.
If there is some problem, and I think the last problem was ill health, they need to advise me.
I have no objection to their invoice as such, but that is only one part of running a businees, its not bookkeeping for accounting purposes. Its just a bill.
When i made a payment, and ive made several they should acknowledge it, that is not what they are doing.