Bharat Sanchar Nigam [BSNL] — Bsnl sim not working and no networks are shown

For the last week, my prepaid sim card is not working. My handset is okay. No network signal appears on the handset screen. Other sim cards are perfectly working in the same particular handset. My sim card when used in a different handset the same result received. When called on this number it shows it's busy even though there are no networks are shown. Other BSNL sim cards used in the same location work perfectly. Please help.
My mobile number is [[protected]].
I have tried everything and even reset my handset still it does not show any connections and the other sim card has no problem at all.
Please Kindly help me to resolve this problem quickly.