Existuji aplikace:
https://play.google.com/store/apps/details?id=cn.m enue.callblocker&hl=cs
https://play.google.com/store/apps/details?id=com. vladlee.easyblacklist&hl=cs
Jinak bych to resil tak, ze to zvednu, vypnu mikrofon a telefon odlozim, at si povida. On to plati, takze po nejake dobe ho to prestane bavit.