Proof of Insurance Harrassment!

I am annually required to send proof of insurance as part of my vehicle finance agreement, which I 100% understand and adhere to. However, after sending through my proof of insurance on two occasions I kept on receiving calls and emails and sms's to say that I have not done so and that WesBank will be loading insurance on my monthly payment. I am absolutely shocked and so irritated by the fact that I had to phone in after how many months and it took the Call Center Agent 5 seconds to find the emails and resolve the issue. VERY disappointed in the customer service and the way you threaten clients after I have sent through everything they need twice.