Welcome to the Xfinity Forum, and thanks for your question, @Tineshaalexande. I'd be happy to review your account and discuss your options for downgrading your services. If you're eligible for a payment arrangement, I can help with that if you're unable to schedule a payment on your end. Review this link and check out the section which will walk you through, Setting Up a Payment Arrangement Online.
Please send a private message with your full name and service address as it appears on your billing statement. To send a message, click on my name "ComcastChe," then click send a message.