SMS "Threats"

Recently I came across one problem incident in one of my friends' place.
He is working abroad and his wife is staying in a flat with their kids.
One of her neighbor /friends' husband started sending obscene SMS messages at night to her asking her for sexual favours.The friend of hers was also staying with family the same apartment complex.
During the day , when the couple met her, the husband behaved normally.This continued and one night when the wife was away , he made calls on her mobile phone repeatedly.She did not take calls.
At last she got so worked up that she took the call and gave him a piece of her mind and asked him to back off.The offender apologised and asked her to forget the incident.
He has repeated this with other "single /husband abroad "wives in the same complex after that also.
Now my friend's wife is in the verge of a mental depression due to this incident .
What to make out of this incident?
We pride ourselves in being educated and forward looking, but I feel we have more uncivilized people among us , but we have more modern gadgets.ARE WE EDUCATED BRUTES?