MuffinTop we don't take submissions of numbers until you have built up enough experience and time scambaiting using BobRTC to dial scammers so you understand what the patterns are with scammers. On top of this we have a filtering system that examines incoming submissions and flags items for moderator review or outright ditches a submission when it hits on a pattern we know to be bad.
That being said we get transposed numbers and we get users who misidentify items. Scammers also sometimes forward their numbers to legit institutions or to victims trying to throw us off. Luckily the way VOIP works when a scammer does this a pen trace leads any Telecom worker investigating a forward back to the phone carrier that is hosting the scammer and can often result in the scammers DID being cut off.
We have a large moderation team that clears away bad submissions and we listen to feedback just like yours. If you're not sure about something please speak up either here or on IRC.