Went back to Aldi this morning and explained about the missing parts...
Initially they offered a refund, I then asked if they could ring other stores in the area to see if they had stock..
The next nearest sold their last one on Thursday...oh bummer!....
The next nearest store had one left...so was duly reserved....but a 10 mile round trip..Ah well..
Got there swapped the goods over, checked the new one and yes there was a bag of parts....Result!!!

Now I'm happy..