In regard to Zech chapter 11, commentator George L. Klein (NAC, Zechariah, p.311) said:
Zechariah 11 may be the most difficult and controversial chapter of the entire book. In a famous comment, S. R. Driver took this point one step further, claiming that Zech 11:4-17 stands as the most enigmatic passage in the whole Old Testament. For instance, distinguishing between figuative and non-figurative language presents significant challanges in chap. 11. Identifying the appropriate topics and points of comparison in the chapter's various metaphors, whether trees or shepherds, is also extremely difficult. In many cases, locating specific historical references to Zechariah's proclamation in chap. 11 proves exceedingly trying as well.
Klein surveys some of the main viewpoints from which the chapter is analysed by commentators. Then, with regard to verses 4-17, he provides this opening survey of what the material presents in general:
Zechariah 11:4-17 unfolds with three distinct movements. First, vv. 4-6 introduce the righteous shepherd. In this subsection, those who spurn righteousness reject the shepherd, thus invoking the wrath of God. Second, vv. 7-14 overview the flock's rejection of their shepherd and the breaking of the symbolic staffs, "Favor" and "Union," symbolizing the breach of the covenant between the Lord and his people as well as the rupture between Judah and Israel. This second section also clarifies the reason for the judgment described in 11:1-3, the people's rejection of the righteous shepherd. Finally, vv. 15-17 conclude on the somber note of a new shepherd, a worthless shepherd whose unrighteousnes and lack of care for the flock results in the decimation of God's people.
Then, when arriving at the commentary starting with verse 7 (the second section of 11:4-17), Klein states:
Verse 7 begins with the affirmation that the shepherd - none other than the prophet Zechariah - did indeed assume the role of shepherd as the Lord had instructed him, though in a symbolic fashion. As the shepherd, Zechariah may have prefigured the messianic King who would provide the consumation of the Lord's promises.
With regard to verse 12 he says:
Verse 12 overviews the final severance of the employment between the shepherd, portrayed by Zechariah, and the people he sought to lead back to God. The request for pay leads to the final transaction when terminating their relationship. The shepherd's desire for money only partially provides his motivation. Rather, the shepherd sought to underscore the finality of the broken relationship between himself and the nation, and symbolically between the Lord and Judah. The price, 30 pieces of silver, represents the lowly price a slave was worth in the earliest era in Israel's history (Exodus 21:32). the money the shepherd received was tantamount to slave wages. The exchange drips with the people's disdain for their estimation of the value of the shepherd. His value to the entire nation did not even surpass the worth of one slave to a single family. The monetary value ascribed to the shepherd forcefully spoke of the trifling attitude of the nation to their shepherd and their God who had sent him.
I only copied small parts of a very voluminous commentary on this, but I tried to copy enough to help get a drift of the passage. Klein sees it as actions taken towards the shepherd whom Zechariah is portraying. But at the same time, the attitude shown the shepherd is representative of the nation's attitude towards God. This view can be seen in several passages in the NT where Christ attributes the nation's view of himself, and their treatment of his disciples, as their not knowing the God that sent him. (Off hand I can't recall the location of specific passages.) Something similar can also be seen in regard to Samuel, when the people requested a human king. Samuel saw it as a rejection of himself, but God said they were really rejecting Him. (1 Sam 8:1-9)
Hope this is some help in your analysis.