Neotel Useless

We have 2 lines with them, and 2 data ****les. We have been having horrific line problems in that we cannot hear incoming callers (running businesses off these lines). After the 03rd call complaining to their call centre, we were told it's our handsets and we must take them to the nearest service centre - enter Menlyn. Staff member Lerato seemed to be helpful, but after being told we were due for an upgrade, which she proceeded to do, we have not had our lines/phones being fully functional since. Either cannot make calls, then we cannot receive calls and get promised it will be up and running in 30 minutes - it has been almost 3 days and I can still not make calls and now I cannot receive them either. Due to all the upgrade shenanigans, we have now been told that our account has been suspended due to us reaching our limit for our 10 lines - WHAT 10 LINES??? everyone apologises and says it will be sorted but nothing happens. HELPPPPP