Like everyone else here has said , from my experience (most) medics dislike it when you spam for an ETA. If a medic isn't moving assume that they are in active RP/ active scenario. Don't start spamming medics, or even pming medics, like tman said, it's only going to slow down the medic. I feel like the only good time to ask a medic over side is if you are on maybe your 3rd request (3rd time after time ran out). Just be patient , you aren't the only call.