Airtel — [protected] : can't use 4g network from 6pm onwards

Address: India

Respected sir/ madam

My prepaid number [protected] can't use Airtel 4g internet from 6pm onwards. It's the scenario from last week. However, i did renew the Airtel 4g pack today with INR 299. even it's quite impossible to connect to Airtel customer representative, due to too much number- redirection service.
I kindly urge you to look into this matter in order to thwart the internet inactivity( from 6pm everyday) of airtel prepaid connection.