Bad service very upset customer

Good day I went in store to find out about my online orders that I would like to cancel they said they cant help me and gave me a contact number I called the number then I was told by a answering machine to email *** I emailed it said invalid email that email adress doesn't work then I went on mrprice app then saw I must email *** I emailed thrice already still no feedback I'm really upset and disappointed with your service you dont even communicate with me an I work in the same field and this is really bad customer service we don't let our customers beg for feedback a R1700 is not a joke that u can just let it slide like I would rather go to the store instead to buy the things as it was winter clothes for my kid than to wait so long it's getting colder by the day and she doesnt have any winter clothes so I would like to have my money put back on to my account and my cash back into my bank account please I want to cancel my two orders immediately I would like to know why my installment went from R280 the first month then the second month to R410 and now my new installment is R530 I've had this account for 2 months so far and the installment went up so much but my balance is the same please get back to me asap

Thanks

Email address ***