Bad services and customer handling

I ordered three chargers and two of them were not working so i complained about them and they told me to submit it to their workshop. When the product were ready to be dispatched they asked me to pick it up which i refused so they scheduled a delivery for me. i called their complaint representative and the guy told me that the product will be shipped on your address and ill get a message regarding that. After 10 days i couldnt reach because of tough schedule. i didnt receive a message and i called them back they said it was dispatched and to check. i checked on tcs and the guy didnt add the address didnt even call me to get the address. Now i called them three times. Two times they both muted their mic on me and the third call the guy hungu