My eflow keeps shutting off while I am using it. It flashes the problem with connection between it and the handheld piece with the grey wire. Anyway, I have disconnected and reconnected everything multiple times, cleaned it thoroughly with soap, water, and the head with alcohol, as well as sterilized it with the NUK. But it still keeps shutting off multiple times, like every 20 seconds or so. Has anyone experienced this? Is there anything else to try before contacting the pharmacy? Has anyone sent theirs back and got a replacement and how much time will it take? Thanks in advance.