Vodafone

Well Vodafone must have gotten my letter today asking to end my current price plan and for them to hand me over my PAC code.
How do I know? - I received about 8 phone calls from them today (none answered). Their retentions dept has a well documented list of people disgruntled with them calling incessantly.

I am still not sure what or where I am going to get a phone from next. iPhone is an option, but not a certainty yet. Suggestions?