Frustrated with Ultimate Properties & Sons's lack of response

I want to report a serious concern with Ultimate Properties & Sons's unit that I purchased on March 17, 2019 from your East Kelli, Maryland store. The product has had repeated billing errors despite being advertised as high quality. I've contacted customer service three times and spoken to Lexie K., but my issue remains unresolved.

I want to report a serious concern with Ultimate Properties & Sons's unit that I purchased on March 17, 2019 from your East Kelli, Maryland store. The product has had repeated billing errors despite being advertised as high quality. I've contacted customer service three times and spoken to Lexie K., but my issue remains unresolved.