no repairs on faulty line

We are an old age home and installed a Telkom Business system at the beginning of this year.For the past 2 months the line has been faulty.We have phoned and send emails on numerous occasions but still no response and nobody that come to repair.We have a 24 hour nursing facility and urgently need our phone!!!!last week we were promised that somebody would come but yet nobody pitched!!!!please we need help!!!!!!