Frustrated with First Reserve Holdings's lack of response

I'm writing to complain about the repair service I received from First Reserve Holdings. After paying $800.68 for platform, I found that it had repeated billing errors. I've tried resolving this with your customer service team multiple times, including speaking with Sheila D., but have not received a satisfactory resolution.

I'm writing to complain about the repair service I received from First Reserve Holdings. After paying $800.68 for platform, I found that it had repeated billing errors. I've tried resolving this with your customer service team multiple times, including speaking with Sheila D., but have not received a satisfactory resolution.