Coolpad India — service not provided under warranty

Hi
I hd purchased cool pad note 5. It's have minor software issue from the date of purchase. But I hv ignored it. When issues become major then I hv visited sikander pur (gurgaon) service center before 3 days to expire of warranty. Firstly they hv wasted my 1 and half hourr for bill after that they hv taken my phone and give me phone in 15 minutes and told me that they hv updated my software issues. And they hv not given any receipt for for phone update and told me that I will not face any issues and if will face any issues v then I need to visit service center again and I need to pay charges because it will be out of warranty after 3 days.

After returning from service centre same issue has been started. I hv called to their contact details but they not responded.

On that day they hv given my phone after format. Because software updation need time and it's not updated in 15 minutes.

If I need to format it then why I visit to service centre.I do it myself.

I have send mail to cool pad customer care mail id but after 1 month still waiting for their reply.

I'm facing problems due to their Negligence and I need to pay extra charges for repairing my phone.

If they provide fine and working phone and on time services then I don't face this problem

So please look into this matter and do the needful.