Problem recieving cell phone calls

I work at a telecoms company in Potchefstroom where a number *** was firstly ported to Iconnect and within 3 days ported back to Telkom. Since then the client of mine has had constant issues as they can receive telkom calls but as soon as a person phones from a cell phone the message says \the number you have dialed does not exist". We have reported this issue multiple times since the 4th of February and we still have no joy. This number is for a large tertiary institution in Potchefstroom and the client is in dire straits as this is the MAIN number. I have exhausted all other means to get this issue fixed and I sincerely hope that Someone at Telkom can please intervene as this situation is getting out of hand. <br> The Log no: 42cti120215<br> 18cti040215"""