Who I have the same questioned this topic

I have 3 lines with unlimited service and plans that include Apple music.  These were provided at no charge until I swapped out my apple watch.  The plans now show the same (and indicate apple music included) but I am being charged $9.99 a month for each line now.  I've contacted support twice and was assured it would be resolved but I still see the issues on my account.  No one seems to know why I am being charged for it and a one time credit was issued to cover my October bill with this incorrect charge.