Flickering in imac 27, getting worse, is there anything can be done??

i bought the iMac 18 months ago, had flickering @3 point brightness level, give it to the Mac store changed something and now got the flickerig at most of the brightness level. what could be the reason and whats the solution?

I'm sorry your phone was stolen dangphonestolen. I know its frustrating to be with out your mobile device and communication to friends and family. We are unable to send your phone a message of that nature. Just be careful to make sure your phone is suspended immediately afterwards if you choose to have a message sent to the phone so the person who has your phone won't incur any charges. Let us know if you have any questions about replacement options. We are here to help.    KinquanaH_VZW Follow us on Twitter @VZWSupport If my response answered your question please click the "Correct Answer" button under my response. This ensures others can benefit from our conversation. Thanks in advance for your help with this!!

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