Very good in sales but poor to support clients

Recently bought 20/20 fiber from mweb the sale person indicate that technician will come and install and there after some will come and set it up. On Thursday 22 June 2021 fiber was is installed and a day after the router arrived on the 25 June 2021 debit order amounting to R250 took place with my limited IT knowledge I try to set up the router but I failed try to call technician I was caller 64 on online and airtime ran out. My last resort was to reverse R250 deduction to buy more airtime but it was enough. Can mweb come help me set it up or come and u install this unused box in my house I'll stay with Rain or find competent service provider. I have already lost close to R400 on airtime and my time. I must thier sales line is very quick to respon when call but technician dololo my cell number that can be used to track the account is *** Andisa Matibe