I left my s7 edge to change the module because it ...

I left my s7 edge to change the module because it had a pink pixel line, question that they did and they returned the old module, I sold it to the old and trusted a few days later I connected the phone to the PC and did not recognize it in any way, I send it to the warranty they take it and then they tell me that they can't repair it because "the spare part doesn't want to be given" and I gave it with the new blindex enzyme and they returned it to me with the cracked blindex, a shame.