BSNL Credit Limit 2000 in 3G but billed 78000 !!

Why do you use it ? Mtnl sent me bill for 23k on RS 1k limit plan, I spoke with their GM and account officer who blamed me only but rectified the bill but not as per the limit and made me pay Rs 2.3k when limit of cyclye was only Rs 999 per month, I disconnected mtnl later thanks to act broadband. Do same for bsnl ? Better use some other co. Why you need wimax anyway, get Airtel broadband if they have it there.
 
Actually I don't use intentionally I changed the plan from unlimited to limted. I gave the letter to bsnl on 26 aug 2018 and they changed the plan on 29 aug 2018. I don't receive any message when the plan was changed. When I used 90 percent of data and then also what I don't receive any message neither on exceeding the credit limit. They do not even shut down my services when credit limit exceeded.
 

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