Paying for no service

Since 5 January we have had no telephone service and the ADSL is slower than the old dial up we once had. I have logged 5 faults up to date. Every time they say it has been resolved but yet nothing has changed. At the customer service they were also not able to assist. Phoning 10210 is not an option, from a cellphone as you hold on forever and it costs a fortune. Yet every month the statement arrives and I am expected to pay for a service that does not exist. It is costing me a lot extra for mobile data so we can at least have basic internet.