Perhaps it's time to take my TFSA elsewhere

I have invested over R80K with African Bank but I wonder if it's time to rethink this. I transfer R3000 from my Nedbank account into my TFSA every month but for June, I cannot make any payment into African Bank Investments - even if I select the account from a pre-approved bank recipient, the system says there is no such account. So then I decided to set up a debit order for African Bank to take the funds directly from my Nedback account, yet again their system wouldn't allow a debit order of R3000 but only a maximum of R2750, I don't know why!! Now they have debited these funds but it's sitting in my current balance and not my available balance on my TFSA so the interest paid into my account is less than it should've been - again I don't know why!!! I tried calling the Investments contact centre on Saturday and no one picked up after making me hold for more than 10mins, I have emailed SCC investments and no response is forthcoming for 5 days. For over two years investing with African Bank, I now feel it may be time to take my investment elsewhere!!!