what a smart phone!!!

ive had my samsung for 1 and a half years and in that time was at the walk in centre with battery problems, phone heats up. since a few months ago ive been having serious problems: ph reboots itself and battery is at 0%! this just deteriorated over time and now...my ph reboots every hour..from battery life 76% to 0% when it restarts. I saw in the mail and guardian, samsung acknowledged this battery issue, however when i called the contact centre i was advised to purchase a new battery!!