A. Setting up and branding social media is the most important initial step in having a successful social media presence. Which I am familiar with and this is the service I offer. However, setup/branding is only the first step.
In order for your social media presence to grow it must be tended, which is best done by someone familiar with your company/organization/etc.
This takes time and for my own personal use, this time is more than I feel like it would gain me by focusing on my social media presence.
I can happily get you started and give you the tools and knowledge to create your own successful presence, but I do not manage your presence at all, only initial setup. I do not promise any number of users. Nor will I help you buy likes, karma, visitors, follows, etc.