Poor customer service experience with Quality Table

I'm writing to complain about the training session I received from Quality Table. After paying $320.47 for device, I found that it had repeated billing errors. I've tried resolving this with your customer service team multiple times, including speaking with Daron N., but have not received a satisfactory resolution.

I'm writing to complain about the training session I received from Quality Table. After paying $320.47 for device, I found that it had repeated billing errors. I've tried resolving this with your customer service team multiple times, including speaking with Daron N., but have not received a satisfactory resolution.