I have a customer who paid sales tax on a couple of invoices and they were not supposed to be charged sales tax. They would like us to issue a credit invoice and they will use this dollar amount in the future.

Also, I do not pay sales tax through the tax paying feature, so I can't do an adjustment here, can I? I pay my taxes through the regular check paying process. My accountant gets my reports and he instructs us what to pay. I probably should be be paying through the correct process, but not sure how to "start" doing it correctly. This is working, but I
know it's not the preferred process.

My second problem is my e-mail invoices through Quick Books are not being received by the customer. My customer informed me and after experimenting by sending some to myself at a different e-mail address they were not received. The message indicates the e-mail was sent, but it is not being received and this customer had been receiving invoices until recently. My internet is working.

Any advice would be appreciated!