Is there any way I can fix my iphone 5 charger?

I had my first charger and it worked great until up by the part you plug it in got messed up somehow it started looking loose and as if the wires were going to start showing through. So I asked my cousin for her spare and that worked for 3 months now it is saying its not compatible. I've tried it in 2 different outlets and the top of the cord is still continuing to do the same thing it looks as if its bubbled. My cousin is letting me borrow hers today but she doesn't get here until 10:30/11 and I'm dying without my phone. Even though that's not too long when I get a new charger will this continue to happen? How many spares do I have to buy for this to stop. I really wish my chargers would just last! When I buy my new one this will be my third since October!

I doubt it, just go to the city center and buy a new one, they are not that much.

Maybe your home's power supply is too much for the charger to bear