Apple bad service support

In 2012 I bought a ipad at Clear Water mall. My daughter broke it so I had it fix. The device is lock and i was not able to unlock it, I did phone Apple after a long discussion with them, they send me a link and ask for the proof of purchase. I went to the istore and they had no record of my purchase since it was bought long ago, they sent the request to head office and after 2 days they did sent me the purchase invoice. I then sent it to Apple. After my 3rd attempt they still refuse to help my to unlock my ipad. I understand they have strict rules if Apple items get ******, but i do have proof or purchase. This is very poor service of Apple and it seems I will never be able to use the ipad again. Apple just proof to me again why I will never buy a Apple product again, poor service, way over priced. Thanks Apple