Is your business named something confusing? Is the marked location wrong?<p>Normal businesses don't have this issue, so I would suspect that your listing is really confusing if the majority of your reviews are for a different business than yours.
First, need to gather more info. For example, we in Ukraine few years ago seen huge number of fake reviewers from India, few times more than Ukrainian market, and in most cases just prohibit Indian IPs was enough to resolve.
With as little details as you have provided, it's extremely hard to give you a helpful answer. Maybe share a link so people can see the reviews themselves?