Here are some steps you can follow to get a cell phone number:
1. Purchase a prepaid cell phone from a phone store, department store, or convenience store. These phones are also known as "burner phones" and are cheaper than what you'll find at mainstream mobile phone stores.
2. Use a website like National Cellular Directory to find the number of the person you need to contact.
3. Look up the person on ThatsThem.
4. Check Facebook or LinkedIn as many times people will make their phone numbers available to the general public.
5. Pay for a service like People Search Organizations.