The waterpik worked well until the battery went dead. What a complicated job to replace the battery and making sure the one is right. Just to get the battery is a problem for me. At 77 how can I do this. Was happy with it but now it is junk. Will you replace this for me for I paid top dollar for it. Waterpik water flosser. . Please consider this plea Thank you Leona Chmura 7 East Street Hadley Ma 01035