Bunch of ****mers posting wrong pricing online unproffional customer service on Whatappp

Use less online shop would recomend anybody to shop with this company. Iwas purchasing Head sets online and I recieved an email stating that the product is free deliver. After doing enquiring Im told that They are sory for the inconvince i have to pay 300 More Wish I could send all screen shoots on this plartform. I feel mislead and im not willing to pay more than a given price I ahve all scrrenshoots please help me get justice