As you know that BITMAIN's latest failure is ANTIMINER d3, Many of us has not received them yet, but it's already useless, it does not make any profit, but loss.Unlike the previous parties/batches, they sold the excessive amount of D3 units and all the customers lost tons of money.
If they are not scammers, they have to compensate this issue.
Possible solutions ; they can offer free change type of unshipped units with L3+ or s9 , free L3+ or S9 units per 2 d3 ,refund , reasonable discounts , or any other real solutions.