Non existent customer service

Reported a problem with internet going down every night about 20 days ago, technician by the name of Larry was meant to be sorting it out, I have called in several times, emailed screenshots of speed test numerous times, reported the problem on the messenger platform, still no response, been given 2 case numbers CAS-352516-X9R1Q1 and CAS-371530-G6Z4J5. Emailed copies of speed test to Avela a week ago who rep**** she was forwarding my email to Management. My problem has still not been attended to. Supersonic customer care is non existent. Account number S1972