SpecSavers Lack of Amazing Customer Service

Unfortunately I have given 1 star as I am so unimpressed with SpecSavers after having made a duplicate payment for my glasses over a week ago and SpecSavers have not yet refunded me or been bothered to contact me to let me know what's happening. I have been back to the branch 3 times, they have no answer. Noone bothers to contact you, it's frankly very unprofessional and disappointing service. My payment showed on the card machine as "approved" but it did not immediately reflect on your SpecSaver system. I was very wary making a 2nd attempt as this is my pension income being a Pensioner, I rely on this money. So with no payment confirmation showing on the system I was persuaded to swipe my card a second time. This 2nd attempt now reflected on the system. I asked the reception to please let me know if they receive a duplicate payment. Next day I checked my bank statement and saw a double payment, yet no word from SpecSavers. I phoned them and yes they had received a double payment, but had not bothered to advise me, especially after I asked them to let me know. I was then asked to come back to the branch to complete a refund form!! It's been over a week and not a word from anyone. I've emailed, I've phoned more then 5/6 times, and yesterday I eventually went in myself and tried to keep my calm asking why my refund had not been made and why has noone contacted or bothered to answer my query. Not a word the whole day although the lady there said she'd let me know. So today I went back again to the branch, still no answer for me! It's the pits and I'm so frustrated with SpecSavers that I want to cancel my order and get both payments back! I will never use SpecSavers again, and I want my refund! Can someone please have the courtesy to contact me, I'd appreciate an apology and I want my refund paid with interest as you have held my money for over a week now. I am angered and diappointed at your apparent disinterest in providing quality customer service. This is going to go to Hello Peter.