No Response to prior complaint

I have sent emails to Sony Mobile and when they didn't get back to me I have now filed hellopeter complaints (this will be the third).<br> <br> I have not received any reply to my complaint other that \Sony Mobile is currently busy with this query"on the 26th of May - I have not heard from them since?<br> <br> Please would you give me an adequate response to my complaint? I am very disappointed with your service."""