How ro request a refund second time

I cancelled every subscription I had and received a refund after I asked for it. It was 2 days ago. Today I got the money, but after few hour yet again I was charged the same amount. How I can request a new refund and stop AVAST from taking my money. I can’t contact with them, because every subsription is cancelled and there is no more options to request a refund through my account and they don’t have any direct emails.