I'm sorry, but the sentence doesn't make any sense to me. As it stands, 'of' makes the customer one or two years old.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Mister Micawber I would have expected '..of the customer's using it'Yeah, very many people do not bother with the possessive in cases like this. Some deliberately avoid it because they think it looks pedantic, but the majority are blissfully unaware that the possessive form could/should be used here. (Actually, it seems to me that the majority of Engli