I applied for courses on the website www.advantage-e.com. I paid the required sum, but after several days the seller asked to pay more. I agreed and hoped to get only positive emotions after these courses, but I was disappointed. I didn’t get any useful info, because the specialist spoke with me and with other in some horrible manner. It was unpleasant for me to come in this place. I wonder if there are other people, who had the same experience. Can you provide any good piece of advice?