Restore my faith in Midas

My husband and I had new wheels fitted on our car, not at Midas...the guys who did it advised us they needed lock nuts, we went to your branch at viking and bought 4 sets. During this transaction taking place, my husband enquired if we would be able to return it as he was not 100% sure this was what the guys are looking for. We were informed we could speak to the supervisor. Needless to say, this was an incorrect purchase, but...upon our return, we were informed we are not allowed to return it. We went back on 3 separate occasions to plea with your consumers and speak to the supervisor to allow us to return it BUT, instead they were rude to my husband, unhelpful and didn't want to assist. We have 4 sets, in its original packaging, never opened, therefore never used. Kindly assist and advise who I may liaise with in order to get a refund for unused unopened products bought but unfortunately do not have a receipt anymore due to a mugging incident? I have conversed via email with Mike, Franchise Manager, and Tumelo, MCID Coordinator, who has asked me a variety of questions, referred me right back to the store ..same one who the escalation and complaint is about. Tried to sort it out with the store manager Letitia, but instead of assisting me she insisted I come to the store and point out perpetrator, the sales consultant, who initially sold the lock nuts to me...Not giving me any indication of whether she has any intent of assisting me or giving me a refund. This is painfully disappointing. When you deal with clients they should be treated with integrity, respect and courtesy,...they are ultimately the reason why your doors are still open. ps..Leaders takes a bullet for their staff...they don't throw them under the bus.