Citations

I am looking for someone who can provide multiple listings onto various local platforms such as Yelp, Google my business, Bing Local, where my details sync onto all local directories.
www.yext.com provide this service to give you an idea of what I am looking for but it is expensive and I am looking fo rthe same service but more cost affective.
Submission of my upto date profile onto all local listing platforms which is called citations.
I will await a response