IIN I think my brother is starting a gang/cult

Investigate! If you find out why they're giving him money then plz reply to this so I can find out too.

Also, what he's doing to your mum sounds not very nice, but if he's managed to flatter his friends into giving him cash then that seems alright, but I don't know anyone who could do that. Even great salesmen need a shitty product to sell. There's something deeper to this...