Dissatisfied with customer service

This is only my second month using vumatel, and I'm honestly trying my best to like the network. When I first encountered the vumatel agents I was offered the R19 package for the first month, however I turned it down to avoid risking delayed installation and bad network service so I opted to pay the full R389. I paid exactly on the first and it was installed on the 9th the very same month. The installers were very friendly and super quick and arrived exactly at 8 in the morning. I was satisfied with my installation. I started getting connection from the wifi 5 minutes after the installers left and I had no problem with me wifi for the first 11 days. On the 21st we had loadshedding, as soon as we got electricity back the router was the connected without internet, I tried contacting the vumatel agents on whatsapp but they responded after 2 hours, I was told to reboot a bunch of times but it still didn't work, I was told the same thing by different agents for 15 days without my problem being solved, I was even told to perform a speed test several times but stil with no real assistance. My wifi started working 3 days before my next payment was due. On the day of my payment I gave vumatel a benefit of a doubt and pay again as I thought I'd have a different experience for my second month, again my wifi only worked for only 11 days. Earlier on today a technician came and changed my router and told me to switch it on after 40 minutes, they did not wait woth me for that 40 minutes to check if it'll work or not, unfortunately 40 minutes passed by and I switched the router on it still didn't work, when I try to contact their agents to tell them about this matter, they say a ticket has been logged for me but unfortunately I have to wait for monday as they do not work on weekends. I still don't have wifi connection at the moment. I'm really sad that this is the service I received, as I was very excited to use this wifi provider