is this sentence grammatically correct?

[Barbara]

"You can contact them and their managers via twitter.

they also have a managment e-mail, but they never reply."

[Katlary]

yes

[Ash]

no problem

[TREV]

You can certainly say it but Grammatically it's a catastrophy. This is street English and FULL of errors.

The Management and themselves can be contacted via Twitter. There is also an email address for the Management, however they never reply to it.