No service or assistance

Good day, I have spent over 20 minutes on the phone for the third time this past 2 weeks. I am being transferred from pillar to post. I am going to explain here one more time and hopefully someone can assist me and not just transfer me. Please check my profile and take it up with the relevant people who didn't do anything.

We have fibre with sadv now vumatel. We cancelled the service to move over to openserve. The technician came to our house and said he cannot assist me and they left. I have since then tried to get some assistance. I have a current sadv box in my house and want to know if it is possible to move to openserve and how do I go about doing this? Can someone please assist me as this is ridiculous. I am thinking of cancelling my account with mweb as I am not getting any assistance and I am sure there is another company that won't mind assisting me.