Vodacom Fibre line upgrade billing problems

A follow up to my last complaint.

Recap: In February, I was told my fibre line would be automatically upgraded to a 75mbps line as the speed I was on would no longer be available, I called and asked for options as the 75 line would cost me nearly double and wouldn't be affordable for me. I was told I could go onto a 25mbps line which i accepted and signed on for. In March I received the same communication again regarding the 75mbps line, which I disputed, again, and again, signed on for the 25mbps line, and was assured that the issue was dealt with.

Now in April, I've been billed for the 75mbps line despite all the above, I've contacted Billing and have been told my query is in hand, 10 days later I still have no updates and keep being told to be patient, it has been 2 months of patience from me and no action from vodacom, and now I'm sitting with a risk of being debited more than I can afford despite going into agreement with Vodacom that I will be going onto the 25 and not the 75 line.

I'm honestly at my wits end with this company as their after sale service is pathetic, if you can use a different service provider for your fibre, rather do that than go with vodacom, I am currently looking at other options myself as I'm tired of running after vodacom to fix their eff ups.