Very poor after sales service

when I Joined SADV the end of last month I took an upgrade option of 100/100 from 20/20 and this will cost me quit a bit more, the sales person was excellent and after I was connected to their network everything worked well for a week or 2 then the problems started,, Last weekend my signal was very low as low as 0.14 up to 30 and since I joint them it never reached a 100/100, so when I called them last week end to report this problem I was advised to log a call via email to get a ticket number, I did it on the Monday after another couple of calls, I got a ticked number and send photos to them on how my signal jump from tower to tower and how low it is, this communication went on threw the week and tonight Friday 25/09/2020 I got fed up and phoned the call center and spoke to Petunia who informed me that SADV logged a call with VUMATEL and the got 24 to 48 hours to resolve the issue or investigate it, I asked her for her Manager Temelo's phone number and she refuse to give it to me when I asked her who is his manager she told me Johan Bekker, and she can not give his number to me because it is their private numbers, I have to sit with out internet or with poor service from SADV and VUMATEL because Petunia, Tumelo and Johan Bekker do not want to service their clients after ours or over week ends, come next week and you debit my account you will be quick to cut of my service if there is no funds, is this the type of service that you Mr. Tumelo and Bekker get if you pay for a service? and now you put Petunia as first line of defense there to take the heat because you are unwilling to provide a fear service to your paying clients. to change Service delivery in South Africa you will have to start with your self. I will be looking for a new internet provider that is willing to give 5 star after sales service, I hope your CEO reads this and make the right decisions regarding your employment with SADV, I am sure there is a lot of people out there that will walk the extra mile for their clients....I am really disappointed in your afrer sales service