Gionee Communication Equipment — gionee a1 touch and keypad board problem regarding

I had faced touch and back button keypad board problem in my Gionee A1 mobile, so I handed over my mobile for warranty repair to Gionee service centre located at dwarakanagar, Visakhapatnam on 12/01/19 and obtained receipt. They assured that mobile will be ready with in one week time but when I approached them after one week they are saying that it will take another one week. Now one and half month going to be complete but still my mobile not yet returned to me. I am facing lot of problem without mobile and they not responding properly...