Eavning my green oval buddies

yes I'm here because I have problems Recently baught a disco td5 my first one and today I was reversing on to the drive and lost drive I've checked it hadn't slipped out ov high tried in low still nothing draind the oil from the sump and it is black and all burnt up only yesterday it had a new filter and oil it was the same then two I should have stuck to the 300tdis but I fancied a change and now I'm paying for it any advice would be appreciated thanks ps it's a automatic

id get a good used box from a landy breaker, unless you fancy looking a clutch pack b second one in from bell housing