$200 referral bill credit for existing Optimum Business customer will be applied to customer’s monthly bill 90 days after referral customer’s installation. Referral account must be kept active and in good standing during that period to qualify. If the referral does not sign up to be a Business customer, you will not receive the bill credit. Referral must be a new business customer with no current Business services. Current Residential customers interested in signing up for Business services are qualified referrals.