How do you get hold of these people!

My builder accidentally cut the line between the box on my boundary wall and my CPE in my house (the cable was buried about 50mm in the ground without any conduit or means of protection...) Since I am responsible for the broken line I tried contacting Vumatel to find out how to buy a replacement cable. After waiting more then 30 minutes on the phone with no answer, I tried sending an e-mail to ********** and ********** its een 2 weeks, and I have not received a response from them. I have managed to source a replacement cable from a 3rd party, and installed the cable myself ( in conduit, properly buried in the ground). Luckily I could do the repair myself, but I can just imagine how frustrating it must be for someone who cannot do it themselves and who needs to rely on Vumatel for help!

No response on emails, no answer on phone... how do you get hold of these people! seems like as soon as they have your money there is no way of contacting Vumatel again!