Billing discrepancy with Modern Clinic medical center

I'm writing to complain about the installation service I received from Modern Clinic. After paying $703.8 for application, 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 Evalyn U., but have not received a satisfactory resolution.

I'm writing to complain about the installation service I received from Modern Clinic. After paying $703.8 for application, 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 Evalyn U., but have not received a satisfactory resolution.