POOR SERVICE

I have taken my Hisense TV in for repairs on the 18th April, and was given it back NOT repaired due to spares not available in SA. I was told to return it back to shop from where I bought it, which refused to process my credit claim from Hisense. I went back to Hisense Credit Department but with difficulty to find a person to take ownership of my problem, eventually did Tembi try to help by telling me she can not arrange a direct credit till her manager are back from China, which was Monday 23 April. She promised to call me back, but this did not happen. Today I tried again to call them but does the phones just ring and no one answers any of the calls to their Credit offices at ********** /4349/3426. Not sure what I must do to get my TV replaced or repaired if none of the Hisense staff are willing to assist me