Buyer delaying payment

I have an experienced buyer who didn't make a payment and didn't respond until I opened a UPI dispute a week after sale ended. They responded saying they are sick, moving house and will pay when a Paypal transfer goes through. Total transaction < $7.

Tomorrow I can close the UPI and get my fees back. I can't be bothered waiting for them to decide when to pay.

I never replied to the buyers msg. I think they are making their own terns of payment, with no firm date when they will pay. They didn't ask if was OK. I just want to close the case now.

Is it correct if I close the UPI the buyer won't be able to leave negative feedback.