Appalling service!!!!

Wi-fi was initially ordered, Vox open serve on 14 May, After a lengthily time the box was installed on 7 June. Monday 19 July the Vox router was activated. subsequently an error occurred. The connection shows transmitting, but user is unable to open web pages. Wednesday the supplier/intermediary came to investigate (user is stupid??) , and confirmed that there is indeed an error in the router connection. The URGENCY of the Wifi was stressed. Due to no response, I started communicating with Vox REf ***0 & ***3& Q***, and been given promises, yet it is Friday afternoon and still no technician in sight . Apparently Mpho (technician) suppose to call me within the next 10 minutes??? I have incurred expenses for a venue tomorrow , who will carry the cost, if the purpose of this gathering is a failure due to poor service from Vox?????? I cringe at the thought of the type of service I am about to receive in future!!!!