Customer Accounts vs Customer Site

Hello,

Our company customers have a contract for every  service they received, When Oracle Receivables was implemented the AR consultant created for every customer contract an account, this has been very difficult when running reports and specially when need to apply the receipts, because it seems the different contracts/ accounts are different customers.

I was thinking on a customer account merge to solve this issue, this way the contracts will be as sites and may solve the problem with the reports and receipts.

Any of you is agree with this or may suggest another way to solve this?

Thanks and Regards,