GTPL — i can not gate speed as per my plan

Address:

Vadodara, Gujarat

When I am purchase GTPL broadband when your sales person me told me we can giving 50 to 60 kbps download speed but today I am have very slow kbps download speed, I was taken 3 years subscriptions, so why are you fraud me? So please tell me your Answer it, why i can not gate speed as per my plan? My plan is 512 kbps user id: Hardih28 mob. No. [protected]