Food Panda — miscellaneous problems

First of all third class worst service of foodpanda. I am unable to order through foodpanda from past 2 months but no one helped me after so many complaints also and i have complained atleast 50-60 times by sending mails and calling but as usual no response then i mailed them to deactivate my account at least but they said they will activate in 3 days but no help is provided and then they said within three weeks but then also they didn't till now. So please solve my problem.