If you want to pester someone you can call their phone number. This could be a friend, family member, or a stranger. You could repeat yourself and say hi, hi, how are you. Repeating yourself can be annoying and a pester for people.
annoy
The definition of the word pester means to bother someone with small annoyances. You can also say that pestering someone can also be called harassing someone.
"Bug someone" IS slang - it means to bother or annoy someone. You could also say pester someone or nag someone.
pester = bug
Pester Lloyd ended in 1945.
Pester Lloyd was created in 1854.
My brother always comes into my room to pester me.
Pester - 2014 was released on: USA: 2014
Annoy, badger, disturb, vex, tantalise are synonyms for pester
of Pester
Don't pester me I'm trying to concentrate
Johannes Pester has written: 'Explosionsschutz elektrischer Anlagen'