Is "This is from xxx" correct usage?

I placed a phone call and introduced myself this way: "Hi, This is from " and a coworker pointed out that the sentence is grammatically wrong.

While I understand that it sounds a bit weird, I'm wondering if it is entirely wrong. Is it? If yes, What are alternative correct usages that do not require me to provide my name?

Solution 1:

In a phone call "this" usually refers to the speaker, so saying "this is from X" is kind of weird. All of the following are normal:

• This is Name from Company.
• This is Name.
• I'm calling from Company.

Since you don't want to give your name, I recommend the last of these.