Mts — Not servicing my Data Card

I have a MTS datacard which I have bought from MTS before 6 months. Now this data card (dongle) is not giving the speed they promised. My number: +[protected] I have complained about the problem before 2 months at one of their outlets. They said it's a problem in this region and will be resolved in new one month. But the problem still continued. So I called their customer service department and they said that they will resolve the problem in between 22 hours. This is what I got from them. Your complaint no. JUL/2244 has been registered on 08-JUL-2015 12:41:15 . Your complaint will be resolved by 22 working hours. Thank you. But no response from them yet (6:01 am 10 July). And I have lost many valuable time because of this and I was delayed in some of my works. Please take immediate action on this case. Thank you.