Airtel — 4g net speed is too slow

Address:

560066

Recently i made recharge of 399/-, unlimited calls and 1gb/per day for 70 days. Unfortunately after one day of recharge, net is very slow during day time. Speed is not going beyond 2kbps. Also outgoing calls are not going if i keep network in 4g mode.
Please let me know whether you will be able to resolve or not.
I can port to other network thinking 399 rupees given to some beggar.