Lists rejected, account deactivated, no refund possible

We signed with GetResponse at the beginning of the year for a full year, looking for something more robust than what we were previously using. I enjoyed the layout of their autoresponders, and after playing around in the free version, we decided it could be a good fit for us. Signed in January and experienced some problems off the bat (but I'm patient and I understand launching takes some time... no problems). We imported all of our contacts -- several thousand -- and our lists were rejected. Strange, as these were legitimate contacts from company sources that I had been emailing for years successfully. I imported them in smaller chunks and found more success, until we were told in February that our account was under review for spam behavior. To resolve, we allowed them to 'clean' our lists -- legitimately cut from 15k to 6k, and began to use their recommended BriteVerify to clean our lists before adding in the future. Frustrating, time consuming, not ideal... but we had already paid for the year and didn't have the budget to change email services. Their drag and drop editor gave us a lot of grief most days, but besides that we didn't have any more rejected lists, and no issues I was aware of until this morning, I received an email letting us know our account has been deactivated, we cannot get our email lists or templates back from our accounts, cannot log in, and a refund will not be issued. To say we are frustrated is an extreme understatement. I've seen their awards, success stories, top 10 email service provider mentions... The truth is that they are unwilling to work with customers who are unhappy and provide no legitimate warnings before terminating services. Now we are stuck without an email service provider (that we paid for through December) in the middle of several Marketing campaigns, and with a limited budget to find someone else for the remainder of the year.