Fill in the blank with these words

!. abrsive

1. abound
   
2. abscond
   
3. abhor
   
4. abstemious
   
5. discreet
   
6. ascertain
   
7. discern
   
8. infraction
   

10.infringe

11.suffrage

My question is:

Uninvited sales pitches over the telephone _______ upon our time and privacy.