Disappointment with Hisense Collection and Exchange Service

I am deeply disappointed by the continued silence from Hisense’s collection and exchange services. Since the 9th of December, I have received no communication, despite being informed that the process would take 7 to 14 days. Multiple follow-up emails have gone unanswered to date, which has been frustrating and unprofessional, especially given the clear timeframe that was initially provided.