I've received two text messages today saying I've reached 90%and the. 100% of my data for my billing cycle. However, I've been at home on my wifi since 130pm and haven't used ANY data and still received these texts. I checked my online billing and it says my data usage is just over 50%...but now my data is shut off? I even have my settings set up so my phone doesn't use data when connected to wifi, so I don't understand how this happened while on wifi iMessaging? Is something not working properly?