Telkom ISDN 2A line nightmare since Oct 2014

We have a ISDN2a on 0312***066 with sec no. 0312***591 linked to the 0312***066. We on telkom anytime unlimited so with both no. we supposed to make calls to any telkom no. free as part of the package. In October we rec. notice that lines are being upgraded in the area & 04/10/2014. we had service interrupted on the day of upgrade but which was fixed after a few days. However we could not rec. calls on the secondary no. 0312***591 & have logged many many complaints since October but telkom has failed to sort out now 4 months later.<br> Also, I now notice that I'm being charged for individual calls made from the secondary 0312***591 which was not the case prior to October as this secondary line is drawn from the same isdn box on the premises. (as part of the package all landline calls dialled from 0312***066 & 0312***591were free). Please escalate to higher management to resolve the billing & rec. of calls on the 2nd no. <br> I also have a ADSL 2mbps line on the same premises (03126***69) on the same a/c & the line speed is pathetic at most times.