What should i do when i am called a cheater every time for the mistakes i commit

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What should i do when i am called a cheater every time for the mistakes i commit during my decisions. Yes we play a sport of cricket. Have a team which just have competition with other team regularly. Earlier were some arguments between both of the team’s players. But we decided to put an umpire who will be the person of the batting team during the batting. We expect only that being a single person he will try to give the right decisions. But they also commit mistake being a human. Ok fine. Now the problem is that whenever they commit mistakes the matter is resolved just like that by having a decision. But when we commit mistakes those people try to dominate on us and call us cheater, even may be some time our decisions are wrong but those are not intentional.