Double charged Check your invoices.

Iam so disappointed with Stanley's Stationers, I ordered my children stationery, I paid the one invoice in full, and due to their mistake they delivered the one order, so I paid part of the total, and had told the lady I was dealing with that I'd pay the balance now in February, tonight I get an invoice for the balance as well as the invoice I had already paid in full for. This is shocking, After I pay my last amount I will mo longer do business with this company. Be careful you are not double charged. Thank goodness I have proof of payments.