You advertise garments on your website that you do not have in stock and are unlikely to receive in the foreseeable future. This leads to extended delivery delays and extreme customer frustration which results in the customer vowing never to deal with you again. It may be difficult for a small family business but Amazon has set a benchmark for immediate delivery and you have to compete with a reasonable delivery expectation if you are to remain in business. You also need to show any extra costs eg. delivery, VAT at the time of order, so that there are no nasty surprises when the invoice arrives.