MTN URB

Today I want to express my displeasure to URB MTN UPINGTON........ On Monday, May 29, I hand in my Samsung phone because he doesn't want to charge..... After a month, they come back to me, and it's because of physical abuse that the phone doesn't want to charge. With evidence how the phone looked on submission and what it looked like when it came to MTN SA, they don't want to fix my phone on warranty. After many emails,whatsapps and calls(which the CEO and the Area Manager do not answer) it is now 4months without progress.... I am seeking help regarding the matter