Sorry to let you wait so long, since received your message, I've been communicating with our related departments.
Please note: the product return policy on Aliexpress is different from Anker store and Amazon.
So if you received a low quality product, we can only handle it according to the AliExpress return policy.
So you may have two options as followed:
If you are not satisfied with partial refund, we will contact you again and give you a full refund in accordance with the first treatment.
We're sorry about the unique problems you’ve been experiencing with our products. We will try the best to resolve the issue for you.