Appalling Customer Service

Horrible experience when reporting slow internet speed. Called the support line 5 times altogether. Communicated through Twitter DM, Whatsapp line and their *** email address. NO SUPPORT. The website promotes a DEDICATED CUSTOMER RELATIONSHIP MANAGER, this person doesn't seem to exist anymore. I had the phone put down in my ear, I was promised multiple times that a manager will call me back. It seems that nobody at this company takes any responsiblity for providing the services that they promote on their website or whatsapp chat line. They have a 24-48 hour policy for technician to support a technical query. This has not been adhered to... SuperSonic have let me down and have shown me quite bluntly that they have priorities other than having satisfied customers. Been from pillar to post with them... Extreme frustration does not begin to explain how I feel about the treatment of a paying customer.