I have seen some spammers/phishing domains using the HIGH bandwidth packages and then requesting refund after 15-20 days so I presonally would go for 7 days / 15 days moneyback guarantee and I always prefer to know why they wish to cancel the hosting etc.
█ IndoUS HostingQuality IT Services since 2004
█ Shared Hosting Reseller Hosting Dedicated Servers Domain Names
█ Custom Web Development Mobile Application Development SEO
█ Custom E-Commerce Solutions, Sports Portals, Health Care - Health Tourism Portals