Hello.Do you mean the damper has fallen apart ? DA2352 FREELANDER DAMPER KIT | Freelander 1996>: Major Units | shop | www.lrseries.com | L. R. Series
If so, you need to remove the front+rear propshafts and the vcu,then get the rear prop off so you can get the support bearing off .then you can get the damper off.
It would be well worth investing in a haynes manual .Its very simply explained within.
You could also trawl through a search in here ,good luck with that.
They will have removed the prop then they whipped out your transmission so have a good poke around and see if there's anything not put back together right.The garage might possibly be at fault.