I had the same problem, Sandy, and finally stopped chanting!
The standard reply to this question would be that this anger is a sign of an impure mind and that the only way to get rid of that is to keep on chanting. I have been chanting for seven years, sixteen rounds daily, but instead of getting less the feelings of lust and anger just increased! And not only anger - also feelings of sadness, depression even, and total despair and inner emptiness resulted while chanting! OMG I must be an offender!