Poor customer service

Poor customer service and lack of experience and knowledge. Eversince my fibre was installed on the 28th October 2021, till date im still having problems with connectivity, Im still unable to connect, Worse part ive just received an invoice billing me for services i have never used requesting me to pay for devices i have never utiled and the whole department including managers and supervisors do not seem to know what the problem is because im still unable to connect. So what am i being charged for because i have suffered a loss with the counteless calls i have been making to the call center with no assistance

Highly frustrated and dissapointed Mrs Zama Nkabinde