I need to credit a clients account with a large amount. Basically a deal was made, there were some damages to one of their staff members vehicle whilst in our care. They asked if they had it fixed if we would just credit the amount towards their account. We agreed. 7 months later here I am trying to sort out large arrear amounts and balances brought forward and they have informed me this credit was never done on their account. Now I KNOW this does not entail a credit note !! What do I do ??? HELP PLEASE !!!