When a client pays you late every single time, he's NOT BUSY. He is telling you where you rank. His truck payment is not late. Your invoice sits for 60 days because yours has no consequences, & he learned that from you. Ulipandwa mgongoni sababu iliinama.
Sales is understanding customers needs, offering the right solution, building trust and relationships, communicating value clearly, & closing & nurturing.
You can market your brand the whole and still get zero inquiries, zero sales, & zero leads. This doesn't mean your target market isn't aware of your brand but at the right time, they'll start purchasing n spreading referrals. Don't stop Marketing.