Quick Grocery App app for iPhone and iPad

Selling vegetables and fruits offline. Now need to go online for that applied for payment gateway for website and Mobile App. For Ex. Selling Brocolli online on website and app. Currently we dont use any medium to sale groceries, all customers are from local area. Need to increase the size and area of business Online refund is credited directly through the mode from which the customer has paid the money within 24 working hours. Once processed by QuickGrocery , refund takes 7 to 10 business days to reflect in your account. Offline refund is credited once the customer shares the bank details post which it takes 7 to 10 working days.