I purchased SRS X99 speaker on 3.9.2015 and am still trying to obtain the Qobuz voucher as advertised with the product and on Sony.co.uk

I have been in email with Support since 7.9.2015, forwarded proof of purchase and, despite email follow up replies I just get told that 'the case has been escalated and we are investigating the case'.

The product is registered to my account and have even had a Review published but.... no Qobuz voucher. Can anyone help, please???