Yes, whether you pay by credit card, or are issued an invoice, we always provide a receipt.
Account > Billing > Usage > Past Invoices
For funds deposited by credit card, go to the gray navigation bar on the left side of your screen. Click Account> Billing>Usage. There will be a link to Past Invoices where you can find your invoice.
If an invoice is being issued, a receipt will be sent via email once payment is received and has cleared.