Shoppers Drug Mart complaint: Abusive assistant manager

I went to self check out machine and I scanned 1 item the total came to $32.00 the machine over charged me it should no be my responsibility to clear previous items put in by previous customers I was attending to my family member who was very sick in a rush to go back home that’s why I used the self check out machine and I proceeded to get help and cashier tells to line up again in a long line I asked to speak with manager this assistant manager by the name of bhupinnder dhaliwall introduced himself in a very intimidating tone im the manager and before I could even finish explaining my situation he cuts me off aggressively, mam its your responsibility to clear previous items he yells at me I started to relay my concern about the time consuming and the guy cut me off and you can leave my store or I’ll call security on you he picks the phone calls security now i have 3 people against me that have no idea what happened all ganging up on me checkout machine and I felt shoppers drug mart should fix the machine so it doesn’t overcharge extra items from previous customers the assistant manager started interrupting me and even stated to yell at me I told him don’t yell at me he quickly called security to threaten me and accuse me of raising my voice when clearly he was the one intimidating me I felt so abused and mishandled I was even thinking of calling the police on this big guy for the intimidation I had experienced I asked for his name he wrote it down and I told him I’m calling head office in a rage he tore up the paper and told me he is not giving me his name I asked for the manager and he proceeded to call the manager over the phone he manipulated the whole story and his manager told him to tell me to call head office and literally I said I’m not leaving the store until in get your names that’s when I was given the information bad experience beyond bad I was very upset of the abuse this person shouldn’t be working in customer service he should be fired i will post this experience media