Harassment by Tracker employee

calling clients after 19H00 is an harassments and I told the accounts department personnel that this is my quality time with my family and she responded with arrogance and poor customer service , we have accounts which are worth millions and we do not get calls after business hours I'm very angry with this company and regret taking a contract with them that's not the way you treat your customers even though their accounts are in arrears and I need an apology from the person who called me and been rude to me even after explaining the inconvenience I'm getting from her she still continued with the call