Poor experience

I decided to apply for fibre via Vuma as Afrihost as my ISP because I dealt with Afrihost and had nothing but pleasant experience's but this journey has been soured by Vumatel firstly there was a delay on my install as they somehow did not get my phone number correct from Afrihost it took 3 attempts and me moaning to get them to finally arrange a install which was a day beyond the 14 day SLA they advertise, then the fact Afrihost doesn't advertise upfront or installation fees but Vuma insist on a fee that equals a month up front, then still require a pro-rata payment an bear in mind my install was 5-6 days before the end of the month I asked for an invoice as I get paid mostly by independent means and need to budget for this but no invoice was received,but three attempts to take a payment and I have sent Afrihost e-mail's but now my line is going to be suspended and still waiting on the info requested as it does not reflect on my clientzone either