Disgusted by Edgars service

On Monday i went to the Edgars after a long day after my prenatal visit to buy my mother a set of bras. I had been through every shop inside Liberty Promenade mall and was by advised by one sales lady at Jet to try Edgars or Woolworths as my mom is a heavily built so its difficult to get the correct size for her . Edgars was closest so i went there first as i found the biggest size i could get for her amd when i went to pay in that very long que we were then advised the system is offline for debit card payments. I advised the cashier that i will wait as i had no cash with me and because my mother had been complaining about backache from her other bras and really needed some relief. As an elderly woman she has been taking care of me since my pregnancy so the list i could do is wait till their systems were back online. While waiting i asked the cashier the return policy should the be a need for me to return or exchange the items of which she rep**** i had 30 days for any returns or exchanges i just had to keep my receipts. I thanked her and proceeded to wait until the system was online again. Unfortunately the bras did not fit my mom and she wasnt very happy with the make as well, i advised her that i will take her shopping myself and she can pick up the correct pair she needs as i knew that i would just return the other ones i brought from Edgars. To my surprise when i went to the store today (which was only after 2 days after my purchase ) i was told that the store had a new return policy and that they couldnt give return the amount to my debit card or give me cas. I pointed it out that on the receipt the is no mention of that policy or anything that stipulates that customers would get vouchers for their returns, and that the vouchers as per the receipt only app**** to purchases made with gift vouchers. The lady looked at me like i was crazy while i was giving her the information, im sorry but im not a shopper at Edagrs to be quite honest i don't remeber the last time i bought something from that store. So to be told i will get a voucher instead of my money, money i had already used for the purchase and used again for another purchase just to ease my mothers discomfort and now im being punished and being pushed from pillar to post because Edgars wants people to come back in the store and not purchase somewhere else, well thats totally not acceptable im sorry. Im a soon to be mother due anytime i cant be going a round waisting my hard earned money just to feed the shops entitlement that people should come back again. What am i going to use the voucher for? like i said i never shop in that store and the only reason i went there was of pure desperation, i even waited while the stores system's were offline just to show good faith and this is the service i get. Im disgusted that i have to even write this review as its raising my blood pressure beacuse im so angry at lackof service and understanding by that store let alone that sales lady who just stood there and looked at me like i was nothing and my complaint wasn't valid for her to even allow me to speak to the store manager. Im sure you have loyal customers of which i don't know how beacuse if this is the service that us non Edgars shoppers get, i wonder how they are dealt with.