Samsung Somerset Lost

I purchased 2 TVs from Samsung Somerset Mall last week. I spoke to the consultants about the TV performance and they assured me that it was very good compared to the HiSense, he even went as far as to say that HiSense makes No Sense. Let me tell you this: Samsung TV's are going backwards. The sound quality is shocking. Software for Netflix and Showmax are very very slow, scrolling around the interface is very very slow. I returned one of the TV's, and they did a cardrefund but the money did not reflect in my account. They assured me that the refund would reflect within 24 to 48 hours, it is now 5 days later. I am in a wheelchair and there is no way for me to get back to the store. Empty promises to follow up, no response at all from store. I now want to return the other TV too but they do not answer the telephone in store. I cannot go to the store due to my current health issues, but they do not answer phones. Well done Samsung, your TV will be shipped to you. Full refund in CASH this time, i no longer trust your processes. So dissapointed!