Do you use 0800/toll-free numbers ?

Hello community members, We are curious to know if any of you use 0800 numbers to allow your customers and prospects to contact you. If so, we would love to hear about your experience with these types of numbers. What were the reasons for choosing to use 0800 numbers? Have you encountered any issues such as costs, management complexity, difficulties in keeping track of phone exchanges, difficulties in tracking calls and conversions made by phone? Are there any other problems you've encountered? We value your feedback and look forward to hearing your thoughts on this topic. Thank you!