Brand is Hillarys. Vertical blinds.
Took the slats off to wash them.
Hung them back up.
Now the wand/pole won't twist the direction of the slats.
Hillarys have said £20 call out charge + cost of repair.
Clearly I'd prefer not to have to pay that if it's something simple in the mechanism that I could fix myself. Not mechanically minded in the slightest, so might as well be looking into a bog hole as trying to figure out why the pole thing won't turn them..... 
If there's any where to tap into a vast knowledge pool it's here and I am boldly posting on AIBU for traffic.
TIA for any insight/help/suggestions.