Some people really believe that you must pay for ads before your business will be noticed but this is a myth because you always get your business out there to the general public without spending on any kind of ads but by doing a few simple things like post on Facebook or Twitter or Instagram. I have done that so many times and it works like magic.If I may understand you clearly you are telling us that aside from advertisement you can still attract more customers .. anything you do to create awareness or persuading people to patronize you is advertisement, it might involve monetary effort or just some maturity traits and the way you treat and provide quality service to them