When my CPAP supplier for 6+ years closed their doors last fall (2018) in Grand Rapids, all CPAP accounts were given to Rotech. In over 6 years with my CPAP, I never had any issues. Immediately after Rotech took over, there are issues. In May 2019, I receive a bill for "co-pay" for December 2018. I have never had any co-pays for my CPAP supplies prior. It...