lack of service

I have an ADSL line from TELKOM.every month my line is down.EVERY MONTH.i got back from holiday the 4th january 2016,a tuesday.thursady my line went off.took 4 days to get it working.came on Sunday afternoon late.so weekend without the service im paying for.then a week later line is down again for a day.now.i had to log another problem the 20th jan 2016.today is the 24th jan.still down.no one can give me an answer why.the told me to go in store and get a sim card and while line is down i can use that for internet.suprise suprisethat doeant work either.i am buying data from vodacom.its cost me more on buying data then what i pay for my uncapped internet from telkom.also the instore service i got from TELKOM FESTIVAL MALL.rude and unhelpful.but that i will take up with TELKOM.