Billing discrepancy with FamilyTherapy Corp. medical center

I'm writing to complain about the training session I received from FamilyTherapy Corp.. After paying $581.94 for unit, I found that it had my warranty claim denied unfairly. I've tried resolving this with your customer service team multiple times, including speaking with Olga K., but have not received a satisfactory resolution.

I'm writing to complain about the training session I received from FamilyTherapy Corp.. After paying $581.94 for unit, I found that it had my warranty claim denied unfairly. I've tried resolving this with your customer service team multiple times, including speaking with Olga K., but have not received a satisfactory resolution.