Why do I keep getting billed more than once for my Apple Music?

My question is, why do I keep getting billed more than once for my Apple Music subscription in 1 month. Yet the payment is supposed to be once every month. Please stop billing me more than once in a month, I literally got billed on the 8th of October and now I’m getting billed again on the 10th or 12th of the same month. Why?

Thanks

[Re-Titled by Moderator]