Extremely poor service from Libre link Sensor departement

After purchasing a Libre link sensor at great cost, it kept giving me readings of 2.9 or lower. When I checked with Accuview my sugar was 5 mml higher. So after placing sensor which hurts I still have to ***** fingers several times a day. After at least 10 phone calls but im sure its double that when calls drop no one phones back or number is just not working…to try and get a solution I am now turning to this platform hoping someone will answer!! I can add that I used a Dexcom G7 previous 10 days and had no issues, bought Libre link because that was all that Dischem had in stock