No response on Pre-Authorisation

I have submitted a pre-authorisation for Dental work on the 5 July 2025 and was told on the 7July 2025 it has been sent to the dental department for approval till date I have not received approval. I have called the call center for the past 2 weeks to follow up and eveytime I am promised a resolve by that after but to no surprise get no feedback from anyone. The last call I was told that a person resigned and they have a backlog. Shocking service