No feedback on returned items

I bought a keyboard and mouse. Within three months it stopped working so I went back and bought another set.<br> <br> This also stopped working and I was not prepared to remain silent again. On 18/8/2015 I returned the package, proof of payment to Dean and asked for a refund. This was refused. he did however offer to send back the equipment and would see if he could get a replacement. he promised to phone me.<br> <br> Of course nothing has happened. I have the return notice number 44125. <br> <br> What am I supposed to do now. Clearly the company has failed to comply with CPA.