Hey there,
I'm really sorry to hear you haven't had the best of luck in this process so far. I'm glad you're thinking proactively about what you can do to improve your chances for this fall.
First, the good news - you don't need to retake the GMAT or TOEFL. You have a great score! Your verbal is a little low but that's not the end of the world. Definitely doesn't warrant you retaking the test. And it probably wasn't what kept you out.
Now for the rest. Without looking at your application, it's close to impossible to give you pointers on what to work on. I'll say this - as for alternate classes, that could be a good idea. Your GPA is a little low. A class or two could definitely help. When it comes to school visits you really should make an effort of visiting as many as possible. As for your work experience - I have no idea what it is or the impact you had based on what you wrote. If it really is a well known agency in marketing, then that is prestige.
I'd love to help you out - 7 dings can be difficult to swallow. If you'd like to talk about your applications and what lies ahead, feel free to sign up to chat with us
[here].
If you have any questions, don't hesitate to ask!
Bhavik