Bad customer service

Since last month I have been receiving statements of some accounts I settled in 2013. The problem was not resolved instead I was sent more paid up letters, same as I receive in 2013. This week I am receiving home loan statement. I never had a home loan with Standard Bank.. I asked the same people who where looking at my other issue.. All I got was I do not work with home loans. You guys are not interested in servicing customers on top of that I had to follow up, no one call or atleast send an email with an update... Customer service is a concern.