*********** and poor service. 3 times in a row.

I've bought and paid off 3 cars through Wesbank. Each time there was a problem. This time, after 3months, they tell me they never received proof of payment or the required documents. Why would I follow up if I haven't sent the documents?? It was attached on 2 seperate mails. I'm baffled. I can only assume that they don't go further than providing a response.