The Republican US senator Roger Marshall says he has finally paid off a bakery debt – after six years and repeated collection attempts reported by a Kansas business that had supplied a large order of treats for a 2020 election watch party.

“We have absolutely no idea how this happened”, the Kansas senator wrote in a social media post containing a screenshot of the payment on a $678.75 invoice from Holly’s Sweet Treats as well as his $1,300 payment. “And we have repaid the bill … double.”

Word of Marshall’s cookie debt became widely known after an 8 October social media post from Holly Thomas, a baker from Hutchinson, Kansas, which began: “Do you know why I will never vote for Roger Marshall?”

The Holly’s Sweet Treats proprietor recounted how Marshall’s campaign had “ordered cookies and treats from my bakery” for a 2020 primary election watch party that preceded his winning his first six-year Senate term.

“For nearly a year,” the post continued, “I made repeated attempts to collect payment, reaching out by phone and email. I never received a return phone call, and the invoice was never paid.”

For those noticing the math ain’t mathing, it’s addressed later on:

Many users gave Marshall what they considered his just desserts in the form of harsh comments, with one commenter saying: “You got caught, and that’s the only reason you paid.”

Others calculated that he actually owed Thomas more than $1,400 at 18% simple annual interest for six years. And one noted that $678.75 doubled is $1,357.50 – not $1,300.