Poor service

I requested a 20 meg FTTH to be installed, the last mile was already done so no cabling required but just for equipment to be installed. After 3 months of waiting and constant follow ups with the ISP I cancelled and signed up with new ISP. It appears VOX did NOT yet cancell with fibre provider so new ISP cannot continue. Now I'm struggling to get the link cancelled with them that they never even installed. I deal with many ISP's and this is the worst service I received. Service is so bad I was transferred to client retention's who asked me what the call was about and when I started to explain they cut the call on me......