Verandah Cafe — Overcharge than MRP

Address: HN-16, Adjacent Geetanagar PS, Mother Teressa Road, Guwahati-781024

Today around 6:17 pm I bought a diet coke can from a cafe name verandah cafe located at HN-16, Adjacent Geetanagar PS, Mother Teressa Road, Guwahati-781024GSTIN:18AADCD0217G124. The price of the coke printed MRP is 40 but the cafe charge 140 in the bill 100 rs more than the mrp I think its illegal i just want look at the concern matter as the cafe is looting on the other items putting illegal charges more than mrp i would request to take action as soon as possible .