Poor service is an understatement

I decided to increase my investment in Ninety One by R225 000. Ninety One has a debit order system where they debit your account. The next day, my account was debited twice. My account went into an overdraft. When I called the call centre, they only has received the one amount. I panicked not knowing where the other amount had gone to. I spoke to a Kabelo Baloyi that said she would come back to me. As of today, I am still awaiting an explanation. Eventually, I asked my bank at my cost to reverse the second debit order. I have not received any explanation, nor has any manager called to explain the situation. This is supposedly a professional organisation. Sorry, but we were better off under Investec. I will be removing my funds soonest.