texts double billed
I'm on the 10 cent a minute prepaid plan which charges 20 cents for a text. When I send a text, I'm charged 20 cents but when I receive a text back. I'm charged twice for it.....40 cents for a regular text. I've called a few times and have gotten refunds but it keeps happening and if it's only for one text, it isn't worth the time or effort to refund 20 cents. This happens with every text I receive.....why?