Please help me. i have samsung galaxy tab with docomo gprs plan. muje 3-4 din pehle 2G plan par 3G ki speed ?

Mil rahi thi 3.5mb-4mb tak lekin ab 2-3 din se 80 kb, 69 kb ki mil rahi he kiya mobile company ne kuchh kar diya hai ya fir kiya karna chahiy. SPEED KESE BADAU HELP ME (UP WEST)