Indian Oil Corporation [IOC] — Unethical behaviour customer service

Received a call from IndianOil Corporation Customer care
[protected] on 23-12-20 at around 3 pm regarding an issue which i had raised i.e SR no.[protected]. The way the lady officer was speaking was very rude and she is speaking as if she is the one who has heavy workload on her. Instead of listening to customers complaint she is very arrogant in speaking to customers. When i asked her for anyway of escalating the issue to higher officials she just disconnected the call.