Long story short, Carphone Warehouse have lost my iPhone 6s Plus after I sent it in for a repair. I've been offered a £349 voucher to spend on a new phone from Carphone Warehouse, but they canf offer me like for like and as I like the Plus phones (larger ones), I'm struggling as they dont offer the iPhone 7 plus either, and to buy the Iphone 8 plus itd involvecme paying out a load of money on top of the £349, which I dont want to do.
In an ideal world I'd settle for a like for like, a 6s Plus, failing me getting a satisfactory outcome, do I have grounds to avoid my contract as cant supply me with either a like for like or a phone that's acceptable.
Thanks in advance