Last week we were one roll away from finishing a match when Marcus dropped.  I asked him to resume today and his answer was:

You tell Marcus: Hi, can we finish our match today?
Marcus says: i got no luck today.

You kibitz: We are very close to finishing our match - it shouldn't take long.
      no answer - proceeds to play a match with someone else

You kibitz: Marcus, will you finish our match please?
      no answer - proceeds to play another match with someone else

This guy is a cheater and a dropper who quits matches and refuses to resume them to avoid losing.  This has nothing to do with phone connections