Customer overpaid for taxes, did a refund, but customer still has 'Unapplied Payment/Credits'
Hello!
I am having trouble balancing a customer account after we had a small problem with taxes.
Let me explain exactly what happened:
I collected taxes (for this customer) that were not supposed to be collected. It happened on 5 invoices.
After 3 invoices, we noticed the problem, I edited the invoice to remove the taxes from it then I had an amount 'received' greater than the 'invoice total' so I think it automatically created 'Credits' to that client. I did a refund corresponding to the sum of the 3 taxes amounts but the client still has 'Credit' on his account.

There was 3 invoices exactly like this one. So I created a refund of 3x 5.98$ = 17.94$
It happened on 2 other invoices before I finally fixed my transaction problem.. So I did the same exact thing for the 2 other invoices: Removed the tax from the invoice, then the 'Amount received' was greater than the invoice total. Then I did a second refund for those 2 taxes amounts.
However, the customer still has 'Credits' to his account and I can't figure out how to clear them ?
Here is a full view of the customer transactions with sums:
Notice that the 2 refunds did not clear the -26.61$ OPEN balance and the customer still has 5 credits:
What am I doing wrong?
Could someone explain me what needs to be done? Even if I create a 'false' refund just to test, the OPEN balance stays at -26.61?
Thank you
