> So they want Telegram to be blocked but scammer call center to continue operating?

Obviously yes, follow the money. Call centers use BSNL which is a state-owned telco, the government gets a cut of every call made. Telegram doesn't give the government any incentive to keep it around.

>In Russia, "extremism" is being against Putin or the war.

In Russia, "extremism" is whatever the state decides it to be. "Give me the man, and I will find the crime" has always been its modus operandi. the last people who might have got fair trial were nobles under the Tzar.