Pathetic service from Discovery Invest

My husband has a RA with Discovery Invest which gets deducted off my bank account monthly. On 22 July I sent them a request (with a signed consent letter from my husband) asking them to stop the RA. By 30 June it was still not actioned and the money was deducted...even though I asked them NOT too. They said that they can refund me the July premium, but needed another consent letter. I emailed it to them on the same day. According to them, the refund would take 3 working days to process AND I would get feedback regarding the RA. It has been 15 working days, MANY phone calls/emails, it is almost pay day again and I am STILL awaiting feedback from them. The agent told me on 2 occasions that she will phone me back the same day with feedback, which I have still not received. With emails sent, I only get an automated reply! Beyond pathetic service!