Hi @des09 u can post int he area that is relent to the topic of issue and a oce can try and help u sort the problem on here in the help with ur service and under the topic.
u can if on a current trial fill in the survey on for it to be logged to the trials team.
u can email the trials team on their own e-mail address
depends on if u need some help on what is causing it
I am assuming that you are on one of the currently running trials. If so you will have been sent a link with your trialist code and a reporting link, if you use that you can report your problem there.
If it is a general problem look on the relevant section on the Community pages (i.e. TV, broadband etc.) to see if anyone else is having the same problem and any potential fixes.