What about my return?

<p>Good day. I requested a return (return ref: ********** 99) beginning of March and it was scheduled for 6 March 2017. I waited and waited, nothing was collected. </p> <p> </p> <p>Circa 9 March I followed up and was told that it would be collected. The courier called me on 14 March and said they'd collect that day before 4pm. Still nothing. </p> <p> </p> <p>It's now 31 March and nothing has been collected. It shows that "return has failed" on the website. Please advise how to proceed?</p> <p> </p> <p>I will definitely no longer shop at Zando after this, the service leaves much to be desired. </p>