You may need to step back and take a fresh look at your customers' needs in order to find ways to boost your sales. It's important to tell your customers about all of the products and services you sell. I'll bet many of your customers have never been told about all the things you have for sale. Many others have been told but have forgotten. Your customer's newer employees may not even recognize your company name.
Some businesses are masters of reminding their customers of all that they sell.
Take Shaws Supermarket for instance. The next time you go to Shaws for a gallon of milk and a loaf of bread pay attention to what happens. You'll find yourself all the way back at the far corner for milk, and then at the opposite end for bread. While shopping for milk and bread you'll make a complete tour of the store. You'll be reminded of all the things you can get at Shaws.