My complaint:

I’m not so good in writing in dutch that why I do it in English,
last 2 month I see on my bill that I pay 42€ for internet data when I use internet only on wifi (I do it like this all last year) noting is change in my telephone and when I phone the help of Vodafone they tell me “DAT KAN” they try to say that my telephone decide to go on internet sound to me stupid answer but they don’t care and the only solution is to block my telephone from internet….. now I need to pay 126 € for internet that I didn’t use and It make me “not so happy” when I think and all this time that I try to find the Wifi connection and con’t connected to internet and pay for this ….

Desired solution:

oplossing end uitleggen

This is Vodafon anwser
Thank you for your reply. I didn't say that your smartphone goes around your WIFI connection. I said that your WIFI connection can get lost and
your phone will then connect to another 3G network in this case our Vodafone Network.

There are different causes why your phone suddenly updates automatically. If you put your simcard in another phone and then back in your own phone again, then it's possible that an update will start. Different setting can cause this as well. It's impossible for me to see what exactly happend, because I don't have acces to your phone.

I'm Not happy but they are big so noting I can do