Spidigo — "broadband is not giving proper internet speed as per selected plan"

Website:

www.spidigo.com

I selected an internet plan named plan310-rev6-bizplus-2mb-ul-18m which should give me 2 mbps downloading speed. Unfortunately the speed fluctuates to much and mostly gives 1.5 mbps speed. I always have to call and complained for increasing the speed. I am preparing for exams using youtube which is not working satisfactorily with this poor speed. Here i attached screenshots of speed test.
Date trouble ticket no
29/09/[protected]
08/10/[protected]
10/10/[protected]
12/10/[protected]