Refusal to close my account

Opened a Cotton On account in August due to me thinking your clothes are made of quality materials, I was mistaken, 2 months later and 1 jeans and 1 pants of mine bought is filled with holes, not only that I also bought clothes for my partner on the same day and her jeans is also ripped. I therefore feel no need to continue purchasing from your store as the quality is really bad. I called your contact center today and spoke to Brady to close my account, all he could say was that the retention's department is too busy to take my call. Please see this as evidence that I would like my Cotton On account closed immediately as there is no balance owing. I expect your response soonest.