Where/how to get my iphone 4 repaired?

I have been searching online for iphone 4 repairs and replacement parts, and every website advertises repairs for a cracked screen. My screen is not cracked at all but the white parts at the top and corners have been dented and gouged from falling. I'm assuming that a whole front screen replacement would be the only way to repair this, but I'm just wondering if there are any recommended sites or companies that would be able to fix it.

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