Flycool/vumatel service sucks

It's been a couple of months since signing up with flycool/vumatel. Everytime I have a query, no one ever responds, month ago I wanted for them to be able to debit my card without me having to go the picknpay to pay every month, got no response and the query was closed, previous month I had no internet service for 24hrs even after paying weeks prior, still got no response, today being the 23rd of Dec, my internet is down and still am unable to reach them, am getting fed up with their service, really fed up, I never get response Even via what's app or through fly cool live chat or private message via their portal.