Motorola Solutions — Moto x rebooting on its own

Address:

Kapurthala, Punjab, 144602

I purchased moto c about a week ago. From the very first day, whenever i connect it to my home wifi, it starts rebooting over and over again. I went to the shop from where i've purchased it and i got it replaced with a different set of same model, but the problem perisists. I had tried 3 sets till now and none of them worked properly. When i connected it to office wifi, it worked well. I went to service centre, they connected it on their wifi and it worked. But it's not working on my wifi.
I haven't installed any app on it yet. I have also tried factory reset, but it's not working. No sd card has been inserted yet. I want it to be replaced with another model but the shopkeeper says he can't help. Is there any way to solve this problem?