Bad customer service

I sold my house using easysell from Standard Bank. I was told that I have an outstanding amount during the process when I was selling. My worry now is that I have been calling Standard Bank easysell for almost 2 months to get the account that I am supposed to pay in and the ref no but not even one person is able to help me. My worst fear is that they will tell me after months that the amount has accumulated interest and not even one person is getting back to me or contacting me for that matter. I have been dealing with Standard Bank for 4 and a half years and its been hell. I dont think I would have even sold my house if their service was excellent.