Threaten adding insurance and not doing what I ask

Wesbank, I struggle with your service and you never doing what you say you will do. <br> After diligently paying my monthly car payments for a year, you call me threatening to add insurance to my bill if I don't send proof of my own insurance within 7 days. The call centre guy promises to send info on where to send this proof immediately - and it took him a month to send it! So I'm worried that you will carry out your threat and I contact you after this call to ask where I need to urgently send this proof of insurance. I send it. You confirm receipt. Then you email me again threatening to add your own insurance if I don't send proof!<br> Now I make a big payment on my car and ask for a capital reduction and an increased set monthly payment. You don't do the capital reduction, even though you email a letter confirming it has been done. Then you charge me more than the amount I asked for at the end of October, only to say that you are going to reduce the payment again from November, even though I have asked to pay a set amount (which is more than I need to pay).<br> What is so difficult about getting basic customer service right??? I'm so tired of struggling every time I deal with you.