BSNL Landline & Broadband — unnecessarily charged for telephone & internet

Address:

Thane, Maharashtra

I am Padmanabhan from Vasai,Mumbai. From march 1st, i had have been very highly charged for telephone & internet usage. I haven't use the phone or the internet to such an extend. After checking the bills through internet, i found that they added the previous months bill and the sum has been added to the bill of this month. I had payed the bills but still they added it to the other month's bill. Now, the sum of it has crossed rs5000.
I payed the bills of March and April. When inquired, they asked us to pay the bill, whereas i never used it to such an extend.
I kindly seek your help for this injustice.
Your sincere,
Padmanabhan