Family Health Plan [Fhpl] — Regarding approval of claim

The hospital has provided necessary documents for approval but the fhpl insurance company is not responding, and the customer care pple are also not replying properly. V hv been waiting at the hospital for claim since 12 noon and till now they've not approved it. Fhpl is the worst insurance company. The preauth person of banglore has switched off his phn. Is this the way u treat