Untrained call centre agent

Just spoke to call centre lady that was not knowledgeable and should not be in customer care due to not being able to ask customers questions. She eventually put the phone down in my ear when I asked to speak to a supervisor. Unfortunately I did not get her name, but the call was initiated at 09h10 from my number to *** number. please listen to call and revert. I was logging a fault on my LTE connection. Last night when we left it was fine, and this morning it is off, and there is enough data on. please assist and follow up with action against your call centre agent doing your company image real damage!!