Overheating Problems A70, keeping the mobile in the fridge

[TUTBUT]

I'm facing an overheating problem with A70

Mostly when using video calls of Viber or WhatsApp... then the mobile restarts like 4-5 times continuously. 

I have been putting it in the fridge to cool it down...

But what really upsets me that whenever I post the problem to the support they have only 2 answers 

- use the mobile in safe mode ( without any application running) !!!!!!!!.

What's the use of doing that if the problem occurs because of apps using hardware components like the camera. 

- backup the mobile then set the phone to factory reset!!!!!!! 

No comment on that unprofessional solution .

I'm sure the problem related to camera discharging high current level from the battery which overheats the motherboard causes the mobile to restart...