I see you are having problems with your internet. Sorry to here about the issues you are experiencing let me see if we can sort this out for you.
If you are using a Samsung J5 I am going to assume that it is not one that we have provided so the chances are you need to input our Virgin settings into the handset in order to use your phone with Mobile Data. This will be under the option of Access Point Names (APN's).
I believe I located your Mobile account and can see Data usage on that number as recent as today. I will send you a private message just to make sure I am looking at the correct Mobile number and I will assist you from there.
If it isn't something relating to your mobile data and maybe an issue with WiFi then it may be worth going through our handy diagnostics tool if you still have the problem.
Whilst the J5 will not be in the model list you should be able to use a similar model such as a J3 (2016) as it should have similar software. You can find that [Here]
To find the private message take a look at the message envelope in the top right hand side of the page.