system
Given the following post, respond as if you're commenting on Reddit:
human
How to contact professors for research internships

I have tried contacting professors by cold-emailing them every time and if possible, calling their offices to know whether they do have internship positions available. However, I receive a one-in-a-million replies and mostly it redirects me to the university admissions page. Consistent e-mailing might be regarded as spam bombing What do you think is the best way to contact professors politely to ask for research internships?
gpt
Your best bet is to ask your own professors if they have professional contacts in the field/location that you're interested in.  

If you want more specific suggestions, you'll probably have to be more specific about your goals and background: 

Are you contacting professors at your own university or elsewhere?  Are you trying to get an internship in your own country or abroad?  What country and subject are you in?