wireless landline issue

Just last week I complemented you guys on great service and now this week I have a complaint. I tried barring out going calls on the wireless Huawei landline I got from you guys and I kept getting the error \incomplete\", I called the call center was told that it's a device issue and was transfered to the Huawei helpdesk and held on till the ***s came home and eventually hung up. I called again and was told I should select the \"new services\" option and was told there they deal with fixed lines or something to that effect, I should go into Telkoms offices or where I got the device and they will be able to help. So I did and asked maybe if the outgoing calls on the simcard instead can be barred seen that it's not working on the device. I was told to take the sim out of the landline and put it in a mobile phone and barr outgoing calls from there and then put it back in the landline...WHY? How is it going to make a difference because I'm barring outgoing calls from the mobile and when I put it back in landline it's still going to be the same??? Can you very urgently get a Huawei helpdesk consultant to call me please, I'm tired of running around..."