I wish there was an actual 'you have to understand English and be able to read' agreement for Bitcointalk.
Thing is, it looks like he's right.
He only has 3 addresses linked to
3SPRV5UZ34QAYFDTLYHIK57JTZZDTGA3, and the most they have held in total at any time is less than 11 BTC, yet in unit
iHbKu57Hwql00/0FeNqkDdOs+rMOVCgqJS5nzm13Uks= on 11.05.2017 he received over 1 GB. That's more than he should have received isn't it?
The extra isn't explained by an existing balance in that address because the address is only involved in 3 units: receiving the May drop, spending the May drop, and receiving the June drop.
So how about trying to understand the very real issue rather than bitching that he can't understand English.