Cashback is misleading
The only reason I ordered the mobile via Unshackled (rebirth of Phones4u) was due to the £25 Quidco cash back. The price of the actual mobile was exactly the same as all other retailers on a sim free purchase, which is what made the cash back stand out.
I ordered via Quidco and the purchase was tracked, only to be declined a day later! I subsequently raised a complaint. This was taken up with the retailer and they have come back offering £5. Well that's great but its a long way off the £25 that was the original deal. I took no other special offers and the purchase was standard, so there can be no excuse for not honouring the cashback offer. The decision however I am told is final and I just have to accept that.
All actual interactions with Unshackled were spot on, customer service helpful and the phone is excellent and I would happily use them again in the future.
I wont however be bothering to try for any other cashback offers via Quidco.