Vodacom refusing to fix phone under warranty (blaming Samsung)

I took my phone in for repairs on the weekend due to having a faulty screen with dead pixels. This has been an issue that my phone has been experiencing for probably about 7 or 8 months however I have not had the opportunity nor a back up phone to take it in for repairs.

In any case, I got contacted by Vodacom telling me that the charging port is broken, something I have had no problems with and that they will not do partial repairs to fix my screen only (which was my only issue).

Vodacom wants to charge me for the repair of something that is not broken and is apparently not covered by the warranty. This sounds like a **** to get out of fulfilling the warranty my phone is still under (this is something I have done research about and I am aware that dead pixels are 100% covered by the warranty) as well as get some extra money from me.

This is disgusting service and shows that Vodacom does not want to fulfill its promises and has no concern for customer care. Vodacom has thus shifted the blame to Samsung saying it is their policy however their assessment does not seem legitimate and a way of avoiding fulfilling the warranty.

I am turning to Samsung for their opinion and looking to forgo Vodacom, who is clearly not interested in sucking more money from me by avoiding the warranty conditions.