Is there anyone you would advise I can approach who is trustworthy?
https://stako.justiz.rlp.de/de/startseite/
IBAN : DE65 57050120 0000264697….info@sparkasse-koblenz.de. BLZ: 57050120. BIC: MALADE51KOB ...
Crime scène shows Germany, involving local company and bank, since you had send your funds there you certainly are entitled to file a criminal complaint directly with the local Prosecutor office
…. says by letter, probably best registered (no mail)
further traces… B2G GMBH, IBAN DE67 3807 0059 0073 7437 00 BIC DEUTDEDK 380, BLZ 38070059 –that’s some Deutsche Bank in Bonn, might be some german prosecutor had already initiated a criminal investigation