Exatt speed problem : since last 10 days my connection has become slow

I am using exatt in goregaon (W), near movie star cinema. since last 10 days my connection has become slow and whn i chk my bandwith it comes to only 32kbs (my plan is 64kbs.). there customer service is really bad and no respnse or thy knw the poroblem and doesnt want to admit.Is anybody else facing this problem. I came to hear from sources that there is bandwith problm with exatt.
Alos if somebody can let me knw the diff between SINGLE USER AND MULTI USER pans of exatt. whether Multi user guarantees more bandwith