Digital Marketing - open to bidding

We are looking for someone to control our facebook page, our twitter account, google+ and also a pinterest account. We have facebook and twitter already, google+ and Pintrest would need to be created. We are looking for an ongoing freelancer to work with us until december 20th and to grow our social media interest within UK and USA only. We are looking for content to be written, tweets to be made, facebook posts to be added. Along with photos provided by ourselves. We would like to see our facebook followers and twitter followers increase with REAL PEOPLE only, NOT ROBOTS. Must also interact with general public who may post onto our facebook account and twitter. Must be extremely polite in response back to the customers. This is an on-going project so we are looking for commitment and real service! Must be able to write in perfect UK english. Links back to our website are also to be created as we are looking at social media marketing to increase our presence within UK and USA.