Getting business from current clients is usually the easiest because they already use your product. Unless you have done a poor job with the account or have not kept up with their needs, you are generally in a good place with them.
Current clients are a great place for referrals and can and should be leveraged to bring in new business. This is why companies spend so much time making sure they have great reviews and working with clients to write these reviews.
So why are you still cold calling?
The numbers don't lie: 90 percent of consumers trust peers, based on a Nielsen poll, and less than 10 percent trust an unknown source. Cold calling is perceived a lot like phone spam. If clients want information, they will search for you or at least leave digital breadcrumbs of questions or conversations that you can find and then engage in.