The worse internet service provider and customer service

It's been 2 days I am struggling with them via email and Whatsapp to get my internet back on after I made payment on a link they have provided me. I have lost 2 days of work because of them. First it was that I paid a R100 short of which they have included the amount on the link. Than it was that the link is not linked to my account, thereafter it was they can't see the payment and finally they will refund me but I won't get service. I am on probation at a new company and this might cost me my job and Fly.cool don't give a damn on how this will affect me. So I want you to know that I might be unemployed soon because of Fly.cool. I paid what I was sent and I was told the prorated amount will be deducted the next month. Also I am paying in advance and even in arrears and this is the type of service they feel happy to provide customers. Asked for a manager and no response. They also respond when every they feel like it.