Telkom Service deplorable yet again

Firstly, we have a business line with Telkom which hasn't been working for a few months and they can't fix it. So i'm paying for no service line. Then we were moving in the same building to a different unit. A telkom agent named Tyler told us to email through on a company letterhead details etc and they will come through. that was on the 12 June. today 19 a week later not even a reply from telkom. when we call them, the lady there says we have to phone through and get this sorted out so they can set up a date. i did so and the voice prompt doesn't want to accept the telephone number even though i put it in. So i get online to do it on their website. i complete the entire form and at the end after submit . the response is my mail cannot be sent the service of that email is full. where will their lack of service delivery end? please assist. we are losing our business and cannot earn an income like this as customers can't get hold of us. this is just wrong and unacceptable. i have given telkom a few options before just complaining.