I would like to install Unifi at my parents home, but the problem is TM says 'no port is available' (or something like that). Anyone can help?

Unifi has been in the housing area since 2012, there are 8 house in this area and seems like all available 'port' has been used. We tried applying for Unifi since last year but till now still no update. Anyone can help suggesting ways we can ask TM to provide more 'port' or the facilities so that we can subscribe to Unifi? Due to the inavailability we need to endure the problematic streamyx. Currently subscribing 4MB streamyx but the line quality always bad (frequent disconnect, blinking adsl light, cant even safely do internet banking). Thanks.