Poor Service received from Standard Bank

I was offered a investment account but the consultant did not explain to me the terms and conditions and no proper advise was given to me. Only on maturity I was advised that there will be no interest on the product and it will depend on how the market was doing. I visited the branch and was told that mail was send out to me, but I have not receive mail. Is this the way SBSA is working now, the sales consultants opens the acc without explaining the investment then mail get send afterwards? Keeping in mind once the acc is opened it can't be closed until maturity. I only received copies of statements from the Manager with no dates on therefore there is no proof when the original mail was send out. It's been 3 months and they are still looking for my openening documents. I asked if there is any records of the documents being send off to head office, or confirmation received from head office, but I was told that there is nothing on record to proof that documents left the branch. I was offered a R1000 for a goodwill payment which I think is pathetic because I lost out on more than R1000 just because the consultant was making a sale and not providing service. Very dissapointed customer.