How to Cheat a Pensioner

i took out an advertised deal with Web Africa for R499 for the installation of fibre internet and the providing of the necessary router in approximately April/May 2021,which took until October to eventually finalise,which was already a warning sign of the further bad service to follow ,one month instalment at R499 and then without warning they just increased the instalment to R699 with no warning Following this of at least 5 requests on their Whatsapp help line and requesting assistance on their Face Book page to provide statements and a copy of the contract to no avail,I resorted to phoning their call centre {and losing my temper} the supervisor Chris said he would forward the said documents,I got a terse Email stating it is up to me to get proof and then they will consider my case as I'm a pensioner