If your using a Search Engine Optimization company for SEO services in Lahore then make sure that their first language is English and that they are writing your articles in house and not passing this task onto a team outside the country. Don't be naive about how SEO Agencies work, Yes a Manchester SEO company that claims to have 120 staff will be telling the truth but 100 of these employees will be based outside the UK where labor is cheaper in countries such as India, but a professional company will write articles professionally in house and simply pass on a list of tasks such as sites to post to and links to build to their teams outside of the country, this works fine, but if they pass on the entire project to these teams then your SEO will be poor and this practice has been known to have negative effects.
Your SEO Company should be able to produce any articles that they have used to promote your website along with their monthly reports, if they don't, ask to see them and then read through them, articles written by a non-English person are easy to spot and do not make very good reading, Spun articles are also very easy to spot, a spun article is an article written by someone else, copied off the internet and spun by software that changes the verbs to produce a unique article, these spun articles used to get past the search engine quality and duplicate content checks but this is no longer the case.
So if an SEO company provides 'spun' articles, then you should avoid them, as articles need to be unique. The best articles are the one's that are written from scratch, if you are good at literature then write your own, is going to take a couple of hours tops and who better to write about your business or product than you? and your know that they are unique. Even if you are using an SEO Company to distribute your article you can always negotiate with then to get a reduction in their fee because you are supplying your own articles, so what are you waiting for? get typing.