Also, they should have proof of insurance for your telemarketing, even if you don't have your credit card bill. You can use your bill as evidence. You have confirmed that you didn't sign the insurance policy, so it can't be established legally. You can find their insurance company based on this, which is illegal.
One more thing, from my personal experience, you can try it, but it may not work. You can complain directly to Shanghai Pudong Development Bank. If ordinary customers enter the bank because of such things, many banks will also resent it, because it is the business of insurance companies after all, but it will be very troublesome if it involves banks, so you can find a bank instead of an insurance company, which is estimated to have some effect.
It's all personal experience. If it still doesn't work, you can send me a message. Although it's not our company's business, it's not something I'm familiar with, but this can still help.