Debited R800.99 after cancelling - No response on refund!!

Had a consultant call me to offer competitive pricing, I accepted and called my insurer to cancel. My insurer matched it (and also noted I was due for my Outbonus if I didn't claim before then) I decided to stay with my current insurer. I called immediately to cancel and was offered a premium of R20 less, I declined as it just wasn't worth the admin. I tried cancelling and was transferred to a few people who were for some reason unable to cancel. For the next few days I called every day and each time got an excuse on why it couldn't be cancelled. Excuses ranged from system issues to consultants not being available. I eventually spoke to a lady who cancelled it. I received cancellation details via email. 30 June I was debited for R800.99. Initially my agreement with Miway was that I would stay with my current insurer for another month and have my account debited 4 July for the month ahead. I was debited well before then. Whoever was dealing with this obviously switched my debit date to the previous month after I had cancelled. I spoke to a lady named Lerato and forwarded bank statement etc. as requested. I have since received no response or acknowledgement after sending through info for the refund.