Disgusted with service

Hi my name is Chantal and from the 11/06 month I have sent cancelation email to netstar go, which they did respond once, but I found out this month that they are still deducting money from my account which I told them is no use to me as it doesn't support my phone, Im so fed up waiting for them to get back to me and it's frustrating paying for something I'm not using, the sell the product so fast but when they have to get back to you it's a mission, I would never ever recommend them to anyone I know, such bad service, dissatisfied, thank you