Hi AliJ
Sad to say, these companies adhere to strict T&C for their cashback as they have set these deals to work base on customers not following the T&C and the constant changes of T&C without prior information to their customers. And that is not ethically and legally right.
I had a contract with Cool New Mobile aka Mobile Affiliates aka Phonebox direct which operated under this principal and last week they have gone into administration as such we are unable to even think of getting our money back. The network have allowed me to reduce the contract however the latest info from Rob Barnes was that we can approached the network provider again and each case will be dealt with case by case. See the thread of Cool New Mobile / Mobile Affiliates in moneysupermarket forum to get the rest of the story.
As for BuyMobilePhones.net, my wife has informed me that they have banked in the money on the 16Nov instead of 11Nov and the money arrived in her bank account yesterday. She is due to send her second claims next month as such finger crossed, she will get her money back. She had prior to sending her claim forms, downloaded the T&C from their site and emailed them for the correct instructions so her claims were accurate. Mine was accurate too with CNM/MA but now that they are in administration, we can only hope the network can do something for me.
The government have pulled in all the network providers with regards to the cashback scheme so I would suggest you call up your network provider to either cancel yur contract or get them to pressure Buymobilephones.net to honour the cashback even though the mistake was yours.
Suggest you also read the thread of Cool New Mobile to get a clearer picture.
All the best
Dave