Scammers from MTS

So, a few days ago, a stranger called me several times. On the first day, he offered services. On the second day, he started threatening. On the third day, I stopped answering. On the fifth day, I replied; he was talking about hacking government services. On the sixth day, I just yelled into the phone: "I'M FED UP! STOP IT!" And he hung up. But on the seventh day, he demanded my card number. I gave him a fake card number. He left me alone forever...