Can anyone tell me how insurance companies use to notify customers over the phone when renewing premiums?

It is very simple to simply promote the payment of premiums. The following is for your reference. Nowadays, SMS notifications are generally used. Use it flexibly.

Tel:

You: Is this Mr./Ms. XX. (Confirm customer identity first)

Customer: Yes, what is it?

You: Is it convenient to answer the phone now?

Customer: What's the matter (or is it convenient, if not convenient, just say I'm sorry and call you later)

You : I am XX from the customer service department of XX insurance company. You purchased XX insurance with our company at XX time. Now it is the payment period, and the premium is XX. Please deposit the premium before XX time (now it is usually bank debit, which means depositing the money into your XX bank account, and the account number ends with XXX).

Customer: Got it, thank you

You: Thank you, I’m sorry, if you need anything you can call anytime, I wish you a happy life

SMS:

Dear XX customer, we warmly remind you that you purchased XX insurance with our company at XX time. Now it is the payment period. The premium is XX and the debit account number is XX. The bank ending is XXX. The final payment time is XXX. Please deposit your premium in time. Thank you and wish you a happy life. XX insurance.