Simplify payment process

Please be innovative and come up with a way to simplify making credit card purchases from retail stores. Ive lost count of how many times ive been charged decline fees because these cashiers from stores dont understand the difference between straight or budget. This does not only charge me but reflects badly on my acc. Please can you simplify the process these people dont know what selecting straight is. u always recommend that we use the credit card over cheque so please help with this concern and come up with a solution to this.