Upgrade issues

I am thoroughly fed up and frustrated with the **** service that I have received from MWEB. At the beginning of June I requested an upgrade to my line which I had to pay an upfront fee for which I gladly did expecting faster internet speed. I had upgraded from a 20mbps line to 40mbps. However the so called upgrade actually resulted in a much slower connection and lagging when trying to watch videos etc when when I called back and explained the issue and asking to be reverted to my old package I kept getting the run around for a week straight I had called daily. Eventually I was told that I had to wait 32 days as per Vumatels policy. I was admittedly frustrated at this stage and may have been a complete Karen to an agent but they basically told me there was nothing I could do when I asked about at least fixing the issue we are having with the speed I was told that someone from tech support would be in contact to assist. To date no one has bothered. I even tried emailing the complaints department but nothing was really resolved. Furthermore I was only supposed to be charged a prorata amount for this month and I was charged the full amount. So basically I have paid MWEB R1058 for the month of June for an upgrade that is somehow slower than the original package I asked for and for just terrible customer service I took approximately and hour out of my day for a week straight trying to get a little bit of assistance but alas as in most cases with big companies they don't really care about individual clients.