Linyi Human Resources and Social Security Bureau has two addresses, one is No.46 Yimeng Road, and the other is No.34 Bayi Road, Linyi City. The telephone number is: 539823252. You'd better call or call 114. Here is a map. Please open the link of the map below to have a look.
Further reading: How to buy insurance, which is better, and teach you how to avoid these "pits" of insurance.