Complaint - Standard Bank Trusts

Almost two years now trying to sort out my fathers estate with Standard Bank Trusts. They NEVER answer their phones, I have to send emails two to three times before I get a response. All I get are emails saying they will get back to me but they NEVER do, then all of a sudden our file is with a new person.Seven different people have dealt with our file over this period, each not knowing what is going on. I have to beg for progress reports. I still dont know where we stand exactly or how much longer it will take. I HAVE HAD ENOUGH.