073 18558802 1 is the telephone area code of Changsha, Xiangtan and Zhuzhou in Hunan Province, both of which are 073 1. There are two reasons. 1. The offices where you apply for the loan are in Changsha, Xiangtan and Zhuzhou; 2. Outsourcing your arrears to a third-party collection agency in Changsha, Xiangtan and Zhuzhou for collection.