Daylight Robbery please Report

I came across this company from a comparison website. Cash4phones were offering the highest value for my I Phone 4. The company were very quick in sending me the returns envelope. Posted the phone recorded delivery 21.11.13.
I logged in to check my status, they finally acknowledged receipt of the phone 2nd December whereby the phone had 'passed its quality control.' Please allow 10 working days for payment.

Ten working days passed no payment, no response to my emails and no answer on their telephone..

Their website no longer works, they have changed their trading name to Yemonia Ltd 10th December. Trading address
SUITE 21 5 SPRING STREET,PADDINGTON,LONDON,W2 3AQ.

Companies house previous address C4P Holdings Ltd UNIT 15 GATEWAY MEWS
RINGWAY,LONDON,N11 2UT

Please report these fraudsters to Action Fraud 03001232040 and Citizens advice consumer service 0845 4040506. They have been ripping people off for years changing company name and directors regulary. Its about time they were stopped from trading at all. The more complaints action fraud and citizens advise receive the more they will have to investigate. Please report.