My husband purchased a dual phone charger from a sprint store in Portland Oregon on April 4 2019 and returned it the same day because it didn't work right. He was told it would be 3 to 5 business days for the refund to put back into the checking account. It was never put back. He called the company repeatedly then was told it would take 7 to 10 business days. It still never showed up. He started calling repeatedly again and was told story after story about why he hasn't received his refund. He talked to 7 different customer care employees with no resolution please help