Misleading advertising by Living Group Grenoble

After speaking with Karen Lee from the Service Excellence at Living Group Grenoble, I was told they would escalate my case, but it's been 5 days with no follow-up. This level of customer service is disappointing.

Dear valued customer, Thank you for bringing this matter to our attention. We at Living Group Grenoble take all customer concerns seriously and are committed to ensuring your satisfaction. We have reviewed your complaint regarding our headphones and have initiated an internal investigation (Reference: REF-178930AB). One of our specialists from our Customer Advocacy will be contacting you within the next 4 business days to discuss this matter further and work towards a resolution that addresses your concerns. We appreciate your patience and look forward to resolving this matter to your satisfaction. Sincerely, Barbara King Director of Customer Success Living Group Grenoble Customer Relations