New home wifi lte not connecting, error connected without internet

On the 28th of January, I app**** for a new home wifi router when I got home the router connected for 5 minutes. On Sunday the 30th of January I called customer care and I was advised to restart the router since from that day I have been calling Mtn requesting assistance however none of their staff members want to take responsibility. on the 3rd of February I then emailed the consultant who initially assisted me to advise that the router is not connecting error connected without internet, I did not receive a response from. him to date. Friday the 4th of February I sent an email to the complaints department I then received an automated response advising that a consultant will contact me within 24 business hours which has already passed with ref nr *** no feedback to date. Yesterday on the 8th of February I went to MTN 14th Avenue as I app**** for the contract the consultant advised they can't do much came back home called 135 again only to be given the same I don't care attitude by their staff members I requested to be connected to their technicians for assistance to date that is not done all they do is to hung up the line.And I have advised that the router light is green and has signal they advised that I should change the Apn however am still unable to connect. I am so disappointed in the Bozza network service is pathetic