Dealing with Bounced Cheques

The best way to deal with bounced cheques is as follows:

Edit the original payment on the invoice (only by a penny) so that you then have the option to add another payment. 
Then add the original firgure as a minus making sure to add a comment saying cheque bounced. 
Then go back and set the original amount to what it should have been. Now the invoice will show as unpaid.

For Example, Original amount £10.00 > change to £10.01
Add payment for - £10.00 comment cheque bounced
Edit original payment from £10.01 back to £10.00