Why on BG95 command AT+CUSD is deleted?

I want to check the remaining megabytes on a data card.
I saw in an older document an AT+CUSD command that can be used for USSD codes to check data traffic information.
In the latest BG95 AT commands pdf, the command has been removed.
How can I check what traffic the card has without this command?

Hello Nikis,

For BG95 series module, not support USSD feature.

Linkin WANG