ADSL Application with no resolution date

I app**** for a landline line at home in Dec 2014 which was installed and I have been billed for it. I have not used it once since as the line is to be used for ADSL. An application for ADSL was submitted approximately 20 Dec 2014. I contacted the call centre last week to understand when this would be installed/switched and was advised there are no ports available and availability could take up to a few months but no one was certain of the exact time frame WHATSOEVER! In the interim I have paid my phone account of R283.53 and never used once. If this is the case I should cancel my landline and revert back to 3G as at least that will be active on the same day.