Job plumber in Lehigh Acres

Last month, my water bill was $60. This month it’s $150. I think the culprit is a leaky toilet tank thingy. I can hear the tank topping up frequently, but I don’t know anything about how to fix it. I can’t afford what a plumber would charge as I am on a limited income only (67-year-old Veteran). Is there anyone who can help? Thanks in advance 🙂
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