Pathetic service

After changing my internal wi-fi setup in mid February I had asked that my landline porting be corrected as was not working - was assured they would take it across and it would take one day. As it did not resolve I followed up and a case was created. Over 3 months later despite numerous whatsapp follow up's apparent escalations, requests for senior management feedback and call back requests this remains unresolved and it is impossible to even get any, never mind any straight answer from them. Over the last two days I have requested a callback and had the phone ring and call immediately dropped OBVIOUSLY to get their call centre stats looking acceptable. Their service is quite simply pathetic!