Double charged on one month payment

I was double charged on one month payment, that time I always pay on time or before. They deducted twice on the 25th of February, I sent an email reporting this, no response, tried calling, not even one of my call was answered. I am so frustrated because I need that money. I dont even know who to contact anymore, their whatsapp line is so useless. Their online chatbot also. Urg this sucks.