3 Mbps running at 0,2 Mbps

I have only been getting a speed of 0,2 mbps on my 4 mbps line for the past week. I have logged a fault on the 20 November and on 23 November i received a call to say my issue had been resolved but when i checked my speed was still 0,2 mbps that is when i was told the would be sending a technician and when i called today(25 November) i still have not been assigned a technician and was told it would take another 48 to 72 hours to get one.