PUMPKIN CAR STEREO SUPPORT CENTER

Hi, recently my back two usb ports arnt working - i use it to charge my iphone and the other one having a 32gb usb in it and now it doesn't work all of a sudden, Does anyone know if theres a update to fix it or what do i do ? i just did a hard reset of the system.
Model number : AE0273B

I hear a buzzing noise when no music is playing ( annoying ) but when i remove the USB back thing it goes away, but USB doesn't work even if its plugged in.

Hi, about this issue, you can contact the pumpkin customer service or the seller.
Regards

What is the email for pumpkin customer service ?

Hi, you can contact them via amazon message if you purchase from amazon, or you can write to support@autopumpkin.com.I suggest you attach these information:
Your Amazon order ID&order date:
The details of the issue(when did it happen&what happened&what did you try to do to fix it);
Attachments(It couldn't be better if you would provide us with pictures or video link);
It will help us understand the issue and provide you right solution.
Your car model and made years;
You phone model and system version(if it is regarded);
The rest of the supplement.
Regards

Purchased through ebay