Bad service suspended for nothing

They have suspended my account for no reason cause as they did get their monthly payment via debit order, im calling them im being told I can only be assisted on Monday, so I must be offline and my business my stop or spend more but im paying for wifi,this is not reliable last month I almost fail my online exams due of non connection, u can't get assistance immediately they critic customer service is very poor to the core, now I will be losing bread for my family,e being offline its a lose in my life n family, this is so selfish of you guys