Dishonest *****'s

Horrible Service. I upgraded my phone in April through Vodacom, this past week my phone just stopped charging, to speed up the process as the phone is still under warranty i decided to take the phone directly to Samsung Clearwater instead of Vodacom. Samsung booked the phone in and advised that should there be no users damage the phone will be repaired under warranty, this morning i receive a phone call stating that the phone has previously been opened so it will not be covered under warranty, So either they are accusing Vodacom of selling 2nd hand phones or you are dishonest and trying to get out of your obligation to fix the phone. The phone is insured as well as under warranty, why would i have any need to take it to any unauthorized dealer for repairs?????????????