AFRIHOST *******

I just received a notification from Afrihost to inform me that I used up all my data whilst not being connected at all. I use home wifi as i work from home so all my devices are connected to my WIFI. I only switch over to Afrihost when I leave my house. My husband sent them a mail some time ago because they are taking his data everyday according to the report but he is not connected and they said its not possible. They are ******* and I want all my data back or a refund, I WILL BE CANCELLING