Hi PETER1616,
I'm sorry to hear that you're having a problem with freezing channels and playback of your shows on your DTV service. Thank you for posting on the Community Forum and apologies for the delay in getting back to you.
Cheers to LittleMick73 for jumping in and offering advice on this. I've been able to check on this for you and can see that you have already arranged an engineer visit for this problem.
Please let us know how this goes.
Kind regards,