Jobs or accounts?

I deliver product to rays supermarkets all over southern oregon. The parent company is ck markets. When I get a check from ck markets it will itemize each invoice paid. I have to search for each invoice number because i have no idea which store it is and marked paid one at a time. Is there an easier way to do this? Perhaps Ck markets should be one account and all rays store should be jobs to ck? Currently each rays store is a separate account. These are all invoiced and ck pays 30 days out. There has got to be a simpler way to handle this.