Double charged for 3 months

Discovery was good to me until the consultant who used to help me left. Now I the person helping me is simply useless. I called to review my car and household insurance in October 2021, after that review the premiums decreased which I was happy with. Now since November Discovery has been charging me the old premium plus the new premium (R2700 and R1900), I really don't understand this. I have paid double for 2months (Decemberand January). In November i was charged the old premium (R2700) after i had already reviewed my policy and was supposed to only pay (R1900). I asked the consultant to fix in November after the first instance and I was told I was going to be refunded but this never happened even after countless follow-ups. Then in December I was debited twice, this was frustrating as it meant some of my financial commitments were not going to be met. Again I asked for remediation and they agreed but until now it's not fixed. I was debited twice again now in Jan... I mean I have other needs to use the money for. Can Discovery Insure please pay me back my money.