I registered a online service with $103 registration fee.
假如说你参加了一个网上交友网站,支付了103元换取几个月的交友机会。
或者假如说,你定了一个家电维修计划,支付了103元换取几个月的维修保证。
I didn't get what they described in their advertisement
假如说你没有交到朋友,后者你没有家电需要维修,你不能说你不应该付钱吧?
and there is no way to contact them to cancel my service.
如果合同里面没有允许你cancel service,对方不必提供cancel 的服务。到期不续就是了。
I called my credit card company , the credit card company sucessuful disputed this account
你拒付103元是不对的,因为对方给你了交友的机会,或者家电维修的保证,在那段时间里你没有交友或者没有维修家电,是你的问题。