Meltable product disaster… help!

This is our first summer doing Amazon. We are FBM RA sellers. We have been selling grocery products pretty much since we started, but since this is our first summer, we didn’t consider how the heat would affect our shipping.

One item that is our best seller right now, a chocolate item, seems to be super heat sensitive. After customers received their first batch of orders, pretty much all of them complained that the product was completely melted and we now have to refund/replace the orders. Since we did so much volume of this product immediately, this is a disaster and it’s taking up all our time that we need to spend packing & shipping our other products we sell. We are working on figuring out a way to ship these products to keep them cold throughout delivery, but it seems like everything we come up with is a fail.

What we’ve done so far: – We put shipping this item on hold and halted orders until we solve the issue. – We ordered shipping ice packs to put in the boxes, however, they melt pretty fast as well. We told our UPS manager what’s going on and he told us to bring our orders back Monday and suggested we figure something else out, because the orders wouldn’t get picked up til then and would melt. He also suggested limiting the zones we ship this product to, and having customers select expedited shipping. – All of this has resulted in orders being late or canceled and we’re worried about our account health.

Does anyone know how to change the delivery zones/shipping options for customers? If you have experience shipping meltables, can you share your methods for keeping them in tact?

I really appreciate it, thank you.