The only other nearby Apple premium re-seller is KRCS of Coventry. Another place where I would be unhappy to shop for I, too am now partially disabled and understand such problems. But the nub of the question is the original seller, Argos, and current consumer law. Talk to your local C.A.B office and ask for their advice. The store's guarantee may be 6 months but they could be liable for a much longer time, under our laws (up to 6 years) and EU laws of 2 years. But it is all too complicated to go into here.
I'm sorry, but with the best will in the world I wrote to the hosts and asked them that your post code be removed and yet nothing has been done. My request to you was meant to reassure you we all are of good intent, the failure to remove the code is less reassuring. But you have no need to worry, it covers some 3 square miles so you are highly unlikely to be found. :-) It's just the principle. Incidentally I am currently in conflict with Apple over the telephone system that turned a simple five minute request into a three hour marathon set of calls ... all the cause of some Auto answering machine that assured me it understood my requests ... and promptly demonstrated that it hadn't a clue.
Chances are the mods who failed to remove your post code will now remove this post, but you will have your notifications copy and know I meant well.
If citizens Advice help, do come back and let us know what happened.
