You can't have actual empathy for anyone outside of your Dunbar number.
Even if you could, I would choose not to.
Have empathy for prostitutes, not for telemarketers.
https://en.m.wikipedia.org/wiki/Dunbar%27s_number
Dunbar's number is a suggested cognitive limit to the number of people with whom one can maintain stable social relationships.
Prostitutes aren't actively trying to scam you.
You can't have actual empathy for anyone outside of your Dunbar number.
Even if you could, I would choose not to.
Have empathy for prostitutes, not for telemarketers.