Well, the Prosecutor usually gets ALL the info on a case from the investigator/deputy (if they deal with the defendant themselves, the Prosecutor can make him/her self a witness [ which means they usually can't try the case], and the defendant may later state s/he had an attorney and report the Prosecutor for unethical conduct (speaking to a represented defendant without the permission of the def's attorney).
For this reason, most Prosecutors don't want to speak with a defendant until the def appears at court and signs a waiver of atty (appearing in pro per/pro se - representing him/her self).
That's the only sure way the Prosecutor's butt is covered from zany defs ... and, also from irate Deputies who don't want the Prosecutor to speak with the def.
(Once the def makes an appearance as representing himself, the Prosecutor can freely speak to def & that's usually when new info regarding the merits of the case finally reach the Prosecutor.)
Some small, informal jurisdictions (Prosecutors) may speak with a def, but my guess is, it's pretty rare.
...regarding the Deputy. If you aren't being treated properly (or are being set up), I'd suggest you ask to speak with his supervisor & present your evidence to the supe.
And again, in small, rural areas you're probably going to be stepping on toes (so be prepared to prove up everything without any help from authorities).
Get your witnesses lined up (who can confirm where you were, when) and make sure your time line re the offense is correct.
PS: Prosecutors take an oath to 'do justice', so to speak. I believe at least 98% of them really take this to heart, and would be appalled at convicting an innocent person.
... The other two percent are Nifongs.