So SiriusXM is one of those gross service-provider companies of the same kind as ADT security and satellite TV providers such that..
How to buy/subscribe to paid services: mail/telephone/online/carrier pidgeon/etc, 24/7/365
Renewal: automatic by default, notice of renewal only given once, in a paper letter via snail mail.
To cancel service or stop auto renew: only by phone. Only between hours X and Y and not on Sunday. Must listen to 15 minute sales pitch.
Eff off SiriusXM 🤬