Reliance Energy — excess billing

With ref. To ny a/c. No.[protected], i am in receipt of sms msg. Informing about bill dt. 21.11.2017. I am shocked to note the bill amount of rs. 5, 370 which is more than 3 times of my normal bill ranging/meter reading between rs. 1500 and 1800. There may be something wrong in the billing. Will you. Please arrange for investigation and rectify the error and advice me the correct bill amount so as to make the payment of same on time.
Regars,
Usha sankaran
M. [protected]