Misplace controller

[ben9108]

I would be grateful if anyone help me to correct my following letter. Thanks

Dear Supplier

Regarding to the misplacing remote controller for the Grandville, internal investigation was conducted and no remaining controller was found for the captioned matter.
Grateful, if your company provides the following remote controller free of charge for our handover to owner.
1. remote controller AKS008 10 nos.

[Ouisch]

It's called a "remote control" not "controller."