I have a lifetime prepaid reliance WLL phone. Been using it for about 6 years now. The instrument gives a lot of problem and on complaint they come and replace with another faulty piece. As a result the past 3 years I've practically not used it at all. The instrument I have at the moment, ringer doesn't work, battery dies in a minute, speaker phone doesn't work.Anyone know how to get a new instrument that I can use as a replacement?