How do I repay a customers excess payment

How do I repay a customers excess payment

I had four customer advance payments from my bank feed which were categorised as customer payments in Zoho books.
I then needed to return these payments and did so in to total which shows as a single line in my bank feed.
When trying to categorise this it asks for amounts and displays the four original customer payments so I key the full amounts so the values match and the system says it cant proceed because the amounts don't match.

This is the same if I pre enter the customer payments into Zoho books and then match up the bank feed payments, the repayment bank feed will not accept.

I have been advised by an agent to make the repayments individually by refunding each payment individually.
This works fine with the bank and customer balances but I get left with the bank feed repayment line which does not get removed. How can I remove this or is there another way to categorise this repayment transaction 

Help please and thank you.