Business ProfileforKaiser Permanente Northwest

This is in regards to an overcharge with my monthly insurance premium. I paid my health insurance premium in ******* and February to Kaiser Permanente which is $429.58/month. I then set up auto pay for the month of March. Mid February Kaiser changed online billing systems. They did not update their system when it came to my account and after they drafted my premium for March on 3/10/24 in the amount of $429.58, they then subsequently drafted an additional $859.16, without prior notice. I had received previous notification my original monthly premium was scheduled and would be removed. It is obvious to me the $859 is two payments and their system did not update to reflect I had paid for ******* and February so they considered my account overdue. I have spoken to 4 customer representatives who all can see this is the case, one confirmed with me that I am not the only person experiencing this issue. I filed a request for a refund of the $859 and was denied, citing overdue balance. When I called to ask about the denial I got the voicemail for the individual handling my claim. When I spoke again to customer care I was told I received a denial because it was a system error, their system hadnt updated and they hadnt fixed this issue or communicated with members effected. That was two days ago. I have heard nothing since. After 6 phone calls, speaking with 4 representatives (*****, *****, ******, and ********), leaving 2 messages for a resolution specialist, *************************, with no return call, and one representative (*****) unable to get any of the 6 supervisors she asked for assistance to respond, I filed a complaint at Kaiser. However, they have not responded to my previous attempts so I need BBB to assist me with a refund. This policy originated in ******* 2024.