Sumps are pretty low on 20v cars, very easy to clip one especially if lowered beyond 30mm...
Post pics of the damage if you can, just hitting the sump wouldn't have caused the damage you described although catastrophic loss of oil from a holed sump would have potentially done some expensive damage to shell bearings and valve gear etc....
The throw of the crank does not intrude that far into the sump but the oil pump and pick up does (of course)....
Feel for you but its more common than you realise to knock a 20v sump tbh...
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