POOR CUSTOMER SERVICE FROM VODACOM

I notified DSTV on the 1st of December 2021,that i wish to cancell my subscription.I assumed a 1 month notice is valid ,which apply to most companies,with the last day 31 December 2021.That never happen,they continued to debit my current account at Standard Bank untill the end of April,but i instructed the bank to stop the debit order.After the notice period,i wrote at least five emails to "help@dstv" and also direct on there website,but they never communicated with me.I expect that they refund me,as soon as possible,as i have done everything according to the book. It appear that they do not read there emails,or pass it on to another department,where it just disapear.The DSTV account number is ; ***3.