Samsung TV faulty no clear way forward.

After months of back and forth, Samsung finally sent a repair tech out to check my TV, they then detected the fault and said they will order parts for repair.

I was told 3 weeks ago someone will get in touch to replace the part, then I get a call to find out if I received my exchanged unit.

I contacted Samsung help via the chat, they then tell me that someone will contact me from the exchange department, no contact again.

I contacted chat again, now they tell me the exchange department said it must be fixed.

This is going on 6 Months with no resolution.

The unit is under warranty.

Reference No ***