We are saddened to read your review, as this is certainly not what we strive for as a business. It is extremely important to us that you (and all our customers) are happy with the results from our soundproofing solutions. At the same time, we are surprised that you would not contact us directly so we could discuss this in more detail with you and help to provide a solution, rather than simply learning of any dissatisfaction via a review.
The original enquiry was for unwanted noise coming through the wall. The soundproofing will certainly have made a difference. However, given your comments it sounds like noise was also flanking through the ceiling. (Although, simply insulating the joists would not have addressed the main noise coming through the wall).