Bata does that. I bought 1 pair of mary janes for my gal once and they did the wax thingy. For shoes to not bite or cause blisters, the most important criteria is fit. If the shoes fit properly, no problem with biting and blisters.LOL!
My mum used to tell me to rub wax on the inner heel layer, but they never work for me. I bought some comfy heel grips instead. Do you think those will work?