My second client asked me to install a NAS. After listening to his request, I gave him a link to a Synology on Amazon and told him that once he receive the NAS, I will install it.

After one week, no news from him. So I called him and he has answered that he had some trouble with the delivery.

And today, I think I lost my second client and that he will never call me back...
What have I done wrong ?