Subaru East Cape motor group problems

Subaru problems: I purchased a downstream O2 sensor for my 2006 Subaru from Subaru Eastern Cape. I was then informed by a senior mechanic within the motor group that the R4600 item would not help with the issue I have with intermittent throttle pick up and engine smoothness. I had already replace the upstream O2 sensor which I purchased from Subaru Port Elizabeth for R6500.

With the information received that the new O2 sensor would have very little effect in sorting out the above issues I asked the local agents if they could return the sensor which had never been opened back to Subaru head office parts division and rather spend the R4600 on doing safety checks like replacing CV's, all fluids in the car etc.

I was then informed that there would be a 15% handling fee of R670.00 to courier the small sensor back to Subaru SA.

This is exorbitant as courier costs should not be more than R250.

Just would like to hear Subaru's opinion on this daylight *******.