Dissatisfied Client

I recently returned product to Isabella Garcia International. Not because I was dissatisfied with the product, because I have a financial constraint and didn't have capacity to afford your product. After several attempts to have the product collected it was finally uplifted by your couriers Fast and Furious on the 7 February 2020. I was informed by the telephone consultant I would have the funds already deducted from my bank account on 01-01-2020 refunded in the form of vouchers. It has been more than a month since the product was returned and naturally almost three months since the invoice was paid. I haven't heard back from Isabella Garcia in any way shape or form. What does it take to get my refund? I have called IGI to no avail. The phones are just left to ring with no one in attendance.