STOP HARASSING ME!!

Sick and tired of the lies of this company, I cancelled since end of October my membership with One plan and Onepet, there is really better options in the market.<br> Before cancelling, I took my cat for a routine check, paid at the Vet with the one card and since then (October 26th) this people keeps harassing me asking for an invoice. The Vet gave me only a receipt so after I HAD TO CALL THEM so they stop harassing me with emails and sms's asking me to \pay this outstanding claim"I got the invoice from the vet and send it to them on the 26th of November"