Luckily I realised some time ago that you need to use a separate registrar to hosting privider so that you can change DNS tags to an alternative server in the event of serious problems. However, early on in my venture into hosting (I am primarily a designer) I had three domains registered by HostPlus. The registrar they use is totalregistrations.com to whom I have spoken to regarding taking control of those domains. Totalregistrations tell me that HostPlus have to transfer the domain to me (even though I am the registered owner), but of course, as I cannot get though to HostPlus, I can't ask them to do it. I have explained this to totalregistrations and am awaiting their reply.
Tum-ti-tum...