Is it possible not to have spent any money on paid advertising at all? Do you think these are the result of word-of-mouth, or very good content marketing?
Every competitor tries to dominate the market and show that they are different from the rest so that their products get an advantage over yours or for that matter any other in the market. Do not be fooled by it. Even if they are not saying it directly to you, they are doing it. All they are doing is trying to market out as many competitors as possible nothing else with these comments. No body can survive without any advertising. For to stay on-the-top of customer list you need to advertise.
Depending upon the nature of your business, staying in contact with your customers can help generate referrals by keeping your name top-of-mind. Many personal services businesses, such as accountants and real estate agents, send birthday and holiday cards to their customers. Other businesses, such as hair salons, offer discounts or a gift certificate to customers who provide a referral that brings in new customers. Printed material includes items such business cards, letterhead, brochures, flyers, gift certificates. Brochures allow you to provide enticing details about your product or service. Simple three-fold brochure paper may be purchased from mail order suppliers such as Paper Direct. Give your customer as much quality information as you can pack into this identity piece.
You can read more here: https://www.bizfilings.com/toolkit/research-topics/marketing/advertising-pr/effective-advertising-makes-people-remember-your-name
Besides if you do have any questions give me a call: https://clarity.fm/joy-brotonath