Data loss incident with Robo Interfaces Holdings service

I'm writing to complain about the training session I received from Robo Interfaces Holdings. After paying $196.35 for accessory, I found that it has a manufacturing defect. I've tried resolving this with your customer service team multiple times, including speaking with Shania B., but have not received a satisfactory resolution.

I'm writing to complain about the training session I received from Robo Interfaces Holdings. After paying $196.35 for accessory, I found that it has a manufacturing defect. I've tried resolving this with your customer service team multiple times, including speaking with Shania B., but have not received a satisfactory resolution.