ExcelInvest International provided defective product

I'm writing to complain about the training session I received from ExcelInvest International. After paying $366.5 for equipment, I found that it doesn't work as advertised. I've tried resolving this with your customer service team multiple times, including speaking with Albert U., but have not received a satisfactory resolution.

I'm writing to complain about the training session I received from ExcelInvest International. After paying $366.5 for equipment, I found that it doesn't work as advertised. I've tried resolving this with your customer service team multiple times, including speaking with Albert U., but have not received a satisfactory resolution.