I recently emailed jeff bezos / his executive customer response team got back with me and let me tell them for 2 hours how I felt their service has gone to shit.
One of the things I explained that happened is that as Amazon got closer via more warehouses the shipping actually went to crap. I also explained how their Amazon shipping vans are sub par even to USPS.
I asked for a basic prime teir free shipping only for $79/yr and asked for shipping options to be available ~ I'd pay +$2-3 to choose fedex over ups for example...
If anything they gave me a chance to vent. I also followed up in email sharing how products are being hijacked for reviews and how there are facebook groups for fake review gathering..