Listing Suspended due to expired complaint. But the complaint itself explains the product hasn't expired

Hi,

I have a product for sale which is a rehydration sports energy drink. The products are sold in boxes of 10 sachets (1 per drink). Typically users would use 1 box per 4-6 weeks.

We had a user complaint which said he received Expired stock - This is impossible as all of our stock has the same expiration date of May/June 2022. The complaint itself states the following Customer Complaint Summary:* The expiry date is only 6 months from the purchase date, which is too short

Amazon has suspended FBA until we can give a breakdown of the issue and how we will stop this happening again. We have pointed out there is no problem as the product has 6 months left before expiry and there all stock in Amazon follows the Amazons guidelines of 90+ 30days for consumption of 1 box.

They are saying that is not enough because we need to address the fact this product has expired, when it hasn’t

Any help?

Thanks