Poor administrative services

I asked them to upgrade my line to a faster speed and they said they would do it immediately. A week later, nothing was upgraded. Called in again and was promised it would happen within a week and again, no upgrade occurred. Whatsapped them, requesting for an upgrade to my line for the 3rd time and it finally it took place. It took a good few weeks for them to actually upgrade my line. This is after having been an existing client for quite some time. After the overdue upgrade, my line speed was still the same. Whatsapped them to query this and was told that there is an issue with the Fiber Network Provider and that the issue should be resolved within 24-72hours. It been about a month since the upgrade was initially requested and I'm yet to see my line speed increase. No idea how something as simple as this cannot be done quickly and easily. I'm also tired of continually calling in and whatsapping without my issue being resolved.