However, the logs are showing the connection dropping (T4 errors) along with the lost MDDs this would suggest a downstream impairment on your local segment.
You will need to contact VM for resolution, either by waiting here about a week until a VM Forum Team Member picks up the thread, or give them a call on 150 from a VM line or 0345 454 1111 for a quicker response.
I'm sorry to hear you're suffering from internet drop outs at the moment.
The T4 errors do look problematic. I've run a test here and it seems there's been a high number on the hub over the past 7 days, though it's difficult to see when these happened. Are you still experiencing the same issues? Could you try rebooting your hub please and leaving it for 24-48 hours to see if the Network Log still records timeouts?