Garrett turbo supplier

Hi I'm in need of an answer to hou is our master distributor in south Africa as I have send emails to them and had no reply and we have like 5 company's claiming there are and there like 10 to 15k differences in price on same product so how would I know who is the distributor and will be save to purchase from

Either give their head office in the USoA a phone call, or use their dealer search tool - https://www.garrettmotion.com/turbo-replacement/distributor-locator/ ?