Vox Telecom - Not good anymore

I am now sitting for more than 3 days with intermittent speeds on my fiber. I pay for a 200M/200M line with VOBI but I get anything from 8 to 130. I logged calls by telephone and by mail (VOX***6, vox ***0). Theyt want to increase the prices but they cannot even supply me what I pay for at the moment. Their helpdesk is completely useless nowadays (Waiting on average 25 minutes to get through, then being cut off or ignored and then trying again. The first call took me 2 hours to log. They were good, now rather stay away.