Webif your mobile carrier is not listed, we are currently unable to text you a unique id code. Webpay online select pay online below to pay your hsn card or hsn mastercard in synchrony bank's online account management site. Sign in with your user id and password. If you're new to synchrony bank's online account management you'll need to. Webyou can make an hsn credit card payment by phone, online or by mail. The process is pretty much the same as it is for paying any other credit card you…