Try e-bay - with caution ! If you just want a fairly cheap simple phone, then you should find one of the basic Nokia's pretty inexpensive and reliable. Replacement covers are available in a multitude of colours for just about all of them cheaply. Just make sure that the phone you get is unlocked, so you can use any service provider's SIM card and has not been barred or blacklisted. Being on a contract, we have loads of not-too-old phones as we get a new one via a free upgrade every year or so. Quite a few of the service providers have one or two of the simpler models available for free, even on pay-as-you-go'. Have a look around. Also, don't give up on your existing phone untill you have tried charging it with another charger.