Unresolved issue and runarounds

When requesting a Discovery Insure ("they") quote, their sales consultant informed me that they would see to my previous insurance policy terminated by them. At the end of August 2017 I got debited for both my "previous" insurer and by them. I contacted them and requested to listen to the call I had made, conveniently for them, they cannot send me the recorded call and I would have to go to their offices to listen to the call... DURING THE WEEK DURING BUSINESS HOURS. Like I have the luxury of skipping work to go sort out the **** their agent said. I was optimistic, maybe a bit naive, they assure me they would investigate the call records and get back to me within 48 hours.

It has been a week (at the least) and I have not heard a thing from them. Once again, I call their hotline to inquire about the issue but this time around, I get passed from one agent to another whereas I specifically requested to speak to a supervisor/manager. An hour later still holding the phone, that's only when I get to speak to the supervisor. Guess what? I still have to wait for them to contact me.

I have been a Discovery customer for some years and the one time I have a problem, they give me runarounds and i have to constantly check up on them.

Here's a question to Discovery, after all this, what do you think is the next thing I should do?