Refund still not received for return processed 7 weeks ago!

It's been 7 weeks and I'm still waiting for my refund/proof of payment!!! With no response from Spree! I returned an item on 19 Oct 2017. On 20 Oct Spree sent confirmation that the refund has been processed - ********** 74-1. I followed up when the refund did not reflect in the bank account after a week. Spree said I had to follow up with my bank, my bank then requested a proof of payment in order to track the payment on their side. I asked Spree to send me proof of payment, with no luck!! I followed up 8 times since then, of which 2 were phone calls. The call center agents keep telling me they have to follow up with the finance department and have to wait for them to provide feedback. I've been phoning again since yesterday but nobody answers the phone. It's been 7 weeks and I'm still waiting for my refund/proof of payment!!! With no response from Spree!