Customer's rhymes with:
customers, customers', customers, customers', customers, customers', elastomers, customers, customers', elastomers
Customer's sounds like:
coastamerica, coastamerica's, costner's, costumers, customers, customers'
customers, customers', customers, customers', customers, customers', elastomers, customers, customers', elastomers
coastamerica, coastamerica's, costner's, costumers, customers, customers'