Poor website builder capability & technical support

Very poor experience from the website builder and customer support. Have set up my website on their website builder thinking everything will be under one roof instead of managing multiple systems. Have set up my website and it was functional until yesterday. Spent hours & weeks setting up the website by myself. But, due to bugs in their website builder, my website home page content was completely erased and over-written by some other content from the page that I deleted long ago. The best part was, it took a lot of effort for me to make their technical support understand what's the issue, and failed to provide any estimated timelines for issue resolution. Being their premium customer (on an advanced plan), the experience working with their technical support was quite bad. Another issue was raised a few weeks back regarding canonical link redirection, for which the resolution hasn't been provided yet after multiple follow-ups. Dear Mailerlite team, if you say customer satisfaction is the top priority, then why your tech team is taking hours to resolve this severe issue because my business is impacted because of this delay.