Buyer spamming me

Ive had a pair of PINK shorts up for sale for a couple of days. I have them priced for 30 dollars and i got sent an offer for 23 dollars, i countered for 25 dollars. They countered with 23.01. I declined the offer. Theyve been sending me the same offer for a couple of days now and just sent me the offer again and sent me a message saying "please".