Absolutely atrocious customer service. Overcharged me for a ticket change by inventing a bogus "fare and tax difference" charge from the airline, but when they billed me they failed to itemize the charges. After 5 months of repeatedly asking by phone and email for an itemized bill, and them repeatedly promising they would provide it to me within 24-48 hours, they finally flat out refused to do so and at that point it became clear that the charge was a complete invention on their part. Indeed, the airline website shows no indication that any additional money was paid to it by TravelMerry.
Moreover, it is almost impossible to get connected to anybody with any level of intelligence there, and the communication is terrible. The entire company works out of India. Difficult to understand them, and phone calls are choppy. They will repeatedly promise to respond within 24 hours, and then they never do. Each time one calls one has to explain everything all over again. Even their "senior staff" are inept... no better than their regular staff. They have an "escalations" department but it's just as inept as their regular customer service line.
Avoid this company like the plague. When things go well with your reservation, it's fine. But as soon as there is the slightest complication, TravelMerry will use it as an opportunity to extract more money from you.