Afrihost unable to resolve a complaint

I submitted a query to resolve a comms problem I am having with my alarm system, that's connected to the internet, not connecting any longer on Afrihost. When I sign out of Afrihost and sign in with another ISP's details, the alarm system is accessible through the internet again. Afrihost keeps asking me to make changes on my side to fix it. It used to work on their network until 2 months ago when it stopped working. I have dealt with 6 different consultants in the last 5 days having to explain my problem all over and all of them are implying the problem is on my side. I called the head office today wanting to complain and was put through, 9 times, between departments, back to switchboard, back to departments and the line eventually was cut off. <br> <br> The problem is NOT on my side, it is on Afrihost side. If the service worked for almost a year on their network and all of a sudden stopped working it must be changes they made. Especially since if I log in with another ISP account, the alarm system is working/accessible from the internet again.<br> <br> Why can they not escalate the matter to network support or MTN to look at their network settings on my account?