Abysmal Customer service and Speed

I have raised a complaint with them on 7th May and haven't yet received any response. I have written a mail to there customer care.. No response.. Have customer care and the response is your account doesn't exist. I am experiencing very slow speeds.. Though Speedtest claims it is 310 kbps I can't play a single youtube video.. Web pages takes huge time to open and after the 10GB is over no pages open... VPN connection doesn't work.. Mails don't refresh, Gmail can only open in the reduced version.. My final hope is raising awareness in this forum so that others do not fall into their trap.. Tata DOCOMO number 9230004228. The 2 open complaints are 537603 and 520431