IndiaMart — refund request due to unsatisfied services

I was registered my co in indiamart since 3 months ago. From very first day starting I feel that there services not serve as they said & I raised my concern many times but all the time there executives denay there fault and told me that you have to wait at least 3-4 months to get good results.
Now after 3 months when the problems become same, I drop refund mail to indiamart team but I m very surprised about there careless behaviour on my mail. After 3-4 days still no one from there team revert on my mail, even not any acnowledgment I reacived from there side.