The check is probably spit out automatically by their computer. I got a $3.00 refund from Verizon for a phone I had years ago (so this was years later). I held onto the check so long I could no longer deposit it, and then I sent it back to Verizon with an explanation, requesting a refund, and I don’t believe I ever heard from them again. Oh well no loss, and way more effort than it was all worth.