Good News !
Just incase anyone comes across something similar...
I heard back from DJI again today with the news that they would repair the drone for free !
I still don't know exactly what happened, and hopefully they get back to me with some kind of report, but very thankful for the free repairs.
for the record, in my experience although it may have taken time and a bit of questioning of DJI's responses, they were very thorough and i felt as though they genuinely wanted to help. For anyone else with troubles i would send your drone back and just be patient to try and find out what has happened.
Cheers, and thanks for everyone's input into my accident.