Game Online

I ordered 20 items online(27th March 2020). I received my parcel 1st April but noticed that 4 of the 20 items was not there as they did not have stock available. I saw that I got billed for 20 items. I then reached out to Game Online. They escalated my query in beginning of April. No emails, No calls, no sms's no feedback. They have this bad habit of not coming back to a person. I must buy airtime to call and buy data to go online to chat with them and all they can say is "So sorry but we did escalate the query. Going in for almost 2 months and still no refund...i can be sure they not gonna reimburse me on the airtime and data I had to spent on them because they too busy and the CHEEK that the consultant (on chat) had to tell me that they respond to specific queries, does this mean my query is not important, so I can rather wait 2 Months for a refund????