That is a large amount of money and certainly if you are being charged that much then they should at least be disposing of the hedge and digging the roots up rather than simply treating them.
this is what i would do if i took on such a job.
kind regards
andy
colney building & maintenance
Would you like a quote from this tradesman?
Invite this tradesman to quote for your job & get a fast response.
Other tradesmen may express their interest as well.