Payment not accepted because it's below minimum amount?

I have been trying to pay the balance of my bill for 2 days and am not able to make payment over the phone or online.  I initially intended to split the payment between 2 cards.  Payment of $150 went through with no issue.  I'm trying to pay the remaining portion of $7.41 but payment keeps getting declined on two cards.  I contacted customer service both days and was initially informed that it may be a tech issue and to wait until today.  Today, declined again; agent sent payment link through email - declined and connected to pay by phone; declined. This companies customer support is going to be what kills it, I went through emails, chat agents, and no one could help me pay the rest of this funky <Edit: Language> 7.41, so I guess I just lose service? Or overpay? What are my options here and why did the last agent I chat with turn on my autopay(didnt ask him to and he didnt even tell me he did it). Also was got peacock subscription that I didnt ask for as well.