Hi, I'm new to this business and don't have a case study yet, but I have a strong offer. My offer guarantees 30 appointments for the client within 30 days, and after 30 days, I refund $25 for every appointment I fail to secure. So, I take $30.25 = $750 upfront from the client, and I don't charge any setup fees. My client told me they don't trust the contract or me because I don't have any references to show, only my social media accounts and content. What should I do? Should I not take payment upfront and only pay for appointments I secure, or is the problem with the client rather than my offer? Should I change my offer initially to gather references?