This gets passengers to complain very much (7)
I believe the answer is:
railway
'this gets passengers' is the definition.
(a railway line transports passengers)
'complain very much' is the wordplay.
'complain very' becomes 'rail' (railing is a kind of complaining. I am not sure about the 'very' bit.).
'much' becomes 'way' (I've seen this in another clue).
'rail'+'way'='RAILWAY'
'to' is the link.
Can you help me to learn more?
(Other definitions for railway that I've seen before include "Train track" , "Parallel lines" , "Track for locomotives" , "Romney, Hythe & Dymchurch, for example" , "Track system" .)