Individual Phone Number Prospecting

I need help tracking down direct phone numbers for a list of people where I only have a partial name plus the company they work for. These are private individuals, not corporate switchboards, so I’m looking for direct lines, mobile numbers, or any reliable way to reach them personally... (Budget: ₹600 - ₹1500 INR, Jobs: Cold Calling, Data Analysis, Data Entry, Excel, Lead Generation, Market Research, Research, Web Search)