Thai Airways review: charges on hand carry and laptop bag

Dear Sir / madam, i am khan regular Travel of Thai air, I had Face problem on Lahore air Port On 25 Decmber 2019, when Fly To dhaka By thai air via bangkok . this kind of problem i never Face before on other Route,
when ask For baording pass, and put my Luageg On weight machine, theu ask me put ur hand carry and also put ur laptop bag on weight machine then, told me ur over weight, i am econmy class pessanger and 30kg allowed and my weight is 36 kg + small hand carry and laptop bage, they weight all togather and told me your over weight and pay them 400usd, this is totally harssment before flight, then i negociat with them and pay the 200usd, but no recipt for this money, and i feel very bad, Please take seriouse Notice . and please mentioned on ticket about the hand carry . and also i am thinking change the airline one this dhaka lahore route, thnaks