Really bad service

On 18th January 2022, Mr. Tumelo Mamogobo from Telkom installation technician indicated that the modem could not be connected as he said the signal was too strong and another technician had to do the connection which was supposed to be done by 19th January 2022. He disappears from us without finishing the internet connection, we have called his caell number 100 times to *** and ***. Even though he works for a telecommunication company, he never picks up his phone!!